diff --git a/keyboards/dailycraft/sandbox/readme.md b/keyboards/dailycraft/sandbox/readme.md
new file mode 100644
index 00000000000..790deba95fc
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/readme.md
@@ -0,0 +1,26 @@
+# sandbox keyboard
+
+![sandbox keyboard](https://i.imgur.com/CaJmz28h.jpg)
+
+macropad
+
+* Keyboard Maintainer: [yfuku](https://github.com/yfuku)
+* Hardware Supported: sandbox PCB, Pro Micro
+* Hardware Availability: https://shop.dailycraft.jp/
+
+Make example for this keyboard (after setting up your build environment):
+
+    make dailycraft/sandbox:default
+
+Flashing example for this keyboard:
+
+    make dailycraft/sandbox:default:flash
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+## Bootloader
+
+Enter the bootloader in 2 ways:
+
+* **Physical reset button**: Briefly press the button on the PCB
+* **Keycode in layout**: Press the key mapped to `RESET` if it is available
diff --git a/keyboards/dailycraft/sandbox/rev1/config.h b/keyboards/dailycraft/sandbox/rev1/config.h
new file mode 100644
index 00000000000..102b8247dba
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev1/config.h
@@ -0,0 +1,148 @@
+/*
+Copyright 2021 yfuku
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0x5946 // YF
+#define PRODUCT_ID 0x0009
+#define DEVICE_VER 0x0001
+#define MANUFACTURER yfuku
+#define PRODUCT      sandbox
+
+/* key matrix size */
+#define MATRIX_ROWS 2
+#define MATRIX_COLS 5
+
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ *                  ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+ */
+#define MATRIX_ROW_PINS { B5, B4 }
+#define MATRIX_COL_PINS { F7, B1, B3, B2, B6 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+
+/*
+ * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
+ */
+#define SOFT_SERIAL_PIN D0  // or D1, D2, D3, E6
+
+//#define LED_NUM_LOCK_PIN B0
+//#define LED_CAPS_LOCK_PIN B1
+//#define LED_SCROLL_LOCK_PIN B2
+//#define LED_COMPOSE_PIN B3
+//#define LED_KANA_PIN B4
+
+//#define BACKLIGHT_PIN B7
+//#define BACKLIGHT_LEVELS 3
+//#define BACKLIGHT_BREATHING
+
+//#define RGB_DI_PIN E2
+//#ifdef RGB_DI_PIN
+//#    define RGBLED_NUM 16
+//#    define RGBLIGHT_HUE_STEP 8
+//#    define RGBLIGHT_SAT_STEP 8
+//#    define RGBLIGHT_VAL_STEP 8
+//#    define RGBLIGHT_LIMIT_VAL 255 /* The maximum brightness level */
+//#    define RGBLIGHT_SLEEP  /* If defined, the RGB lighting will be switched off when the host goes to sleep */
+/*== all animations enable ==*/
+//#    define RGBLIGHT_ANIMATIONS
+/*== or choose animations ==*/
+//#    define RGBLIGHT_EFFECT_BREATHING
+//#    define RGBLIGHT_EFFECT_RAINBOW_MOOD
+//#    define RGBLIGHT_EFFECT_RAINBOW_SWIRL
+//#    define RGBLIGHT_EFFECT_SNAKE
+//#    define RGBLIGHT_EFFECT_KNIGHT
+//#    define RGBLIGHT_EFFECT_CHRISTMAS
+//#    define RGBLIGHT_EFFECT_STATIC_GRADIENT
+//#    define RGBLIGHT_EFFECT_RGB_TEST
+//#    define RGBLIGHT_EFFECT_ALTERNATING
+/*== customize breathing effect ==*/
+/*==== (DEFAULT) use fixed table instead of exp() and sin() ====*/
+//#    define RGBLIGHT_BREATHE_TABLE_SIZE 256      // 256(default) or 128 or 64
+/*==== use exp() and sin() ====*/
+//#    define RGBLIGHT_EFFECT_BREATHE_CENTER 1.85  // 1 to 2.7
+//#    define RGBLIGHT_EFFECT_BREATHE_MAX    255   // 0 to 255
+//#endif
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 5
+
+/* define if matrix has ghost (lacks anti-ghosting diodes) */
+//#define MATRIX_HAS_GHOST
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/* If defined, GRAVE_ESC will always act as ESC when CTRL is held.
+ * This is useful for the Windows task manager shortcut (ctrl+shift+esc).
+ */
+//#define GRAVE_ESC_CTRL_OVERRIDE
+
+/*
+ * Force NKRO
+ *
+ * Force NKRO (nKey Rollover) to be enabled by default, regardless of the saved
+ * state in the bootmagic EEPROM settings. (Note that NKRO must be enabled in the
+ * makefile for this to work.)
+ *
+ * If forced on, NKRO can be disabled via magic key (default = LShift+RShift+N)
+ * until the next keyboard reset.
+ *
+ * NKRO may prevent your keystrokes from being detected in the BIOS, but it is
+ * fully operational during normal computer usage.
+ *
+ * For a less heavy-handed approach, enable NKRO via magic key (LShift+RShift+N)
+ * or via bootmagic (hold SPACE+N while plugging in the keyboard). Once set by
+ * bootmagic, NKRO mode will always be enabled until it is toggled again during a
+ * power-up.
+ *
+ */
+//#define FORCE_NKRO
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+//#define NO_DEBUG
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+
+/* Bootmagic Lite key configuration */
+//#define BOOTMAGIC_LITE_ROW 0
+//#define BOOTMAGIC_LITE_COLUMN 0
diff --git a/keyboards/dailycraft/sandbox/rev1/keymaps/default/keymap.c b/keyboards/dailycraft/sandbox/rev1/keymaps/default/keymap.c
new file mode 100644
index 00000000000..6def745c347
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev1/keymaps/default/keymap.c
@@ -0,0 +1,34 @@
+/* Copyright 2021 yfuku
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+
+enum layer_names {
+    _DEFAULT,
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [_DEFAULT] = LAYOUT(
+        KC_1, KC_2, KC_3, KC_4, KC_5,
+        KC_6, KC_7, KC_8, KC_9, KC_0
+    )
+    
+// Layer template.
+// Copy and uncomment this template to create a new layer  
+//    [_LAYER_NAME] = LAYOUT(
+//        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+//        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+//    )
+};
diff --git a/keyboards/dailycraft/sandbox/rev1/keymaps/default/readme.md b/keyboards/dailycraft/sandbox/rev1/keymaps/default/readme.md
new file mode 100644
index 00000000000..7fe2318a44e
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev1/keymaps/default/readme.md
@@ -0,0 +1 @@
+# The default keymap for sandbox
diff --git a/keyboards/dailycraft/sandbox/rev1/keymaps/oled/keymap.c b/keyboards/dailycraft/sandbox/rev1/keymaps/oled/keymap.c
new file mode 100644
index 00000000000..25910ef919e
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev1/keymaps/oled/keymap.c
@@ -0,0 +1,42 @@
+/* Copyright 2021 yfuku
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+
+enum layer_names {
+    _0,
+    _1,
+    _2,
+    _3
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [_0] = LAYOUT(
+        KC_1, KC_2, KC_3, KC_4, KC_5,
+        KC_6, KC_7, KC_8, KC_9, KC_0
+    ),
+    [_1] = LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    [_2] = LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    [_3] = LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    )
+};
diff --git a/keyboards/dailycraft/sandbox/rev1/keymaps/oled/readme.md b/keyboards/dailycraft/sandbox/rev1/keymaps/oled/readme.md
new file mode 100644
index 00000000000..7fe2318a44e
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev1/keymaps/oled/readme.md
@@ -0,0 +1 @@
+# The default keymap for sandbox
diff --git a/keyboards/dailycraft/sandbox/rev1/keymaps/oled/rules.mk b/keyboards/dailycraft/sandbox/rev1/keymaps/oled/rules.mk
new file mode 100644
index 00000000000..ab9d5c6ac2f
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev1/keymaps/oled/rules.mk
@@ -0,0 +1,2 @@
+VIA_ENABLE = yes
+OLED_ENABLE = yes
diff --git a/keyboards/dailycraft/sandbox/rev1/keymaps/via/keymap.c b/keyboards/dailycraft/sandbox/rev1/keymaps/via/keymap.c
new file mode 100644
index 00000000000..047eabf513c
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev1/keymaps/via/keymap.c
@@ -0,0 +1,42 @@
+/* Copyright 2021 yfuku
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+
+enum layer_names {
+    _1,
+    _2,
+    _3,
+    _4
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [_0] = LAYOUT(
+        KC_1, KC_2, KC_3, KC_4, KC_5,
+        KC_6, KC_7, KC_8, KC_9, KC_0
+    ),
+    [_1] = LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    [_2] = LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    [_3] = LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    )
+};
diff --git a/keyboards/dailycraft/sandbox/rev1/keymaps/via/readme.md b/keyboards/dailycraft/sandbox/rev1/keymaps/via/readme.md
new file mode 100644
index 00000000000..f3c721ab107
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev1/keymaps/via/readme.md
@@ -0,0 +1 @@
+# The via keymap for sandbox
diff --git a/keyboards/dailycraft/sandbox/rev1/keymaps/via/rules.mk b/keyboards/dailycraft/sandbox/rev1/keymaps/via/rules.mk
new file mode 100644
index 00000000000..1e5b99807cb
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev1/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/dailycraft/sandbox/rev1/rev1.c b/keyboards/dailycraft/sandbox/rev1/rev1.c
new file mode 100644
index 00000000000..dccf24c7466
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev1/rev1.c
@@ -0,0 +1,17 @@
+/* Copyright 2021 yfuku
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "rev1.h"
diff --git a/keyboards/dailycraft/sandbox/rev1/rev1.h b/keyboards/dailycraft/sandbox/rev1/rev1.h
new file mode 100644
index 00000000000..d15cffe1ae2
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev1/rev1.h
@@ -0,0 +1,35 @@
+/* Copyright 2021 yfuku
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "quantum.h"
+
+/* This is a shortcut to help you visually see your layout.
+ *
+ * The first section contains all of the arguments representing the physical
+ * layout of the board and position of the keys.
+ *
+ * The second converts the arguments into a two-dimensional array which
+ * represents the switch matrix.
+ */
+#define LAYOUT( \
+    k00, k01, k02, k03, k04, \
+    k10, k11, k12, k13, k14  \
+) { \
+    { k00, k01, k02, k03, k04 }, \
+    { k10, k11, k12, k13, k14 }  \
+}
diff --git a/keyboards/dailycraft/sandbox/rev1/rules.mk b/keyboards/dailycraft/sandbox/rev1/rules.mk
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/keyboards/dailycraft/sandbox/rev2/config.h b/keyboards/dailycraft/sandbox/rev2/config.h
new file mode 100644
index 00000000000..06905afe47d
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev2/config.h
@@ -0,0 +1,148 @@
+/*
+Copyright 2021 yfuku
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0x5946 // YF
+#define PRODUCT_ID 0x0011
+#define DEVICE_VER 0x0001
+#define MANUFACTURER yfuku
+#define PRODUCT      sandbox rev2
+
+/* key matrix size */
+#define MATRIX_ROWS 4
+#define MATRIX_COLS 5
+
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ *                  ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+ */
+#define MATRIX_ROW_PINS { B5, B4 }
+#define MATRIX_COL_PINS { F7, B1, B3, B2, B6 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+
+/*
+ * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
+ */
+#define SOFT_SERIAL_PIN D2  // or D1, D2, D3, E6
+
+//#define LED_NUM_LOCK_PIN B0
+//#define LED_CAPS_LOCK_PIN B1
+//#define LED_SCROLL_LOCK_PIN B2
+//#define LED_COMPOSE_PIN B3
+//#define LED_KANA_PIN B4
+
+//#define BACKLIGHT_PIN B7
+//#define BACKLIGHT_LEVELS 3
+//#define BACKLIGHT_BREATHING
+
+//#define RGB_DI_PIN E2
+//#ifdef RGB_DI_PIN
+//#    define RGBLED_NUM 16
+//#    define RGBLIGHT_HUE_STEP 8
+//#    define RGBLIGHT_SAT_STEP 8
+//#    define RGBLIGHT_VAL_STEP 8
+//#    define RGBLIGHT_LIMIT_VAL 255 /* The maximum brightness level */
+//#    define RGBLIGHT_SLEEP  /* If defined, the RGB lighting will be switched off when the host goes to sleep */
+/*== all animations enable ==*/
+//#    define RGBLIGHT_ANIMATIONS
+/*== or choose animations ==*/
+//#    define RGBLIGHT_EFFECT_BREATHING
+//#    define RGBLIGHT_EFFECT_RAINBOW_MOOD
+//#    define RGBLIGHT_EFFECT_RAINBOW_SWIRL
+//#    define RGBLIGHT_EFFECT_SNAKE
+//#    define RGBLIGHT_EFFECT_KNIGHT
+//#    define RGBLIGHT_EFFECT_CHRISTMAS
+//#    define RGBLIGHT_EFFECT_STATIC_GRADIENT
+//#    define RGBLIGHT_EFFECT_RGB_TEST
+//#    define RGBLIGHT_EFFECT_ALTERNATING
+/*== customize breathing effect ==*/
+/*==== (DEFAULT) use fixed table instead of exp() and sin() ====*/
+//#    define RGBLIGHT_BREATHE_TABLE_SIZE 256      // 256(default) or 128 or 64
+/*==== use exp() and sin() ====*/
+//#    define RGBLIGHT_EFFECT_BREATHE_CENTER 1.85  // 1 to 2.7
+//#    define RGBLIGHT_EFFECT_BREATHE_MAX    255   // 0 to 255
+//#endif
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 5
+
+/* define if matrix has ghost (lacks anti-ghosting diodes) */
+//#define MATRIX_HAS_GHOST
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/* If defined, GRAVE_ESC will always act as ESC when CTRL is held.
+ * This is useful for the Windows task manager shortcut (ctrl+shift+esc).
+ */
+//#define GRAVE_ESC_CTRL_OVERRIDE
+
+/*
+ * Force NKRO
+ *
+ * Force NKRO (nKey Rollover) to be enabled by default, regardless of the saved
+ * state in the bootmagic EEPROM settings. (Note that NKRO must be enabled in the
+ * makefile for this to work.)
+ *
+ * If forced on, NKRO can be disabled via magic key (default = LShift+RShift+N)
+ * until the next keyboard reset.
+ *
+ * NKRO may prevent your keystrokes from being detected in the BIOS, but it is
+ * fully operational during normal computer usage.
+ *
+ * For a less heavy-handed approach, enable NKRO via magic key (LShift+RShift+N)
+ * or via bootmagic (hold SPACE+N while plugging in the keyboard). Once set by
+ * bootmagic, NKRO mode will always be enabled until it is toggled again during a
+ * power-up.
+ *
+ */
+//#define FORCE_NKRO
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+//#define NO_DEBUG
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+
+/* Bootmagic Lite key configuration */
+//#define BOOTMAGIC_LITE_ROW 0
+//#define BOOTMAGIC_LITE_COLUMN 0
diff --git a/keyboards/dailycraft/sandbox/rev2/keymaps/default/keymap.c b/keyboards/dailycraft/sandbox/rev2/keymaps/default/keymap.c
new file mode 100644
index 00000000000..7fdf8016623
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev2/keymaps/default/keymap.c
@@ -0,0 +1,27 @@
+/* Copyright 2021 yfuku
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+
+enum layer_names {
+    _DEFAULT,
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [_DEFAULT] = LAYOUT(
+        KC_1, KC_2, KC_3, KC_4, KC_5, KC_A, KC_B, KC_C, KC_D, KC_E,
+        KC_6, KC_7, KC_8, KC_9, KC_0, KC_F, KC_G, KC_H, KC_I, KC_J
+    )
+};
diff --git a/keyboards/dailycraft/sandbox/rev2/keymaps/default/readme.md b/keyboards/dailycraft/sandbox/rev2/keymaps/default/readme.md
new file mode 100644
index 00000000000..7fe2318a44e
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev2/keymaps/default/readme.md
@@ -0,0 +1 @@
+# The default keymap for sandbox
diff --git a/keyboards/dailycraft/sandbox/rev2/keymaps/oled/keymap.c b/keyboards/dailycraft/sandbox/rev2/keymaps/oled/keymap.c
new file mode 100644
index 00000000000..c72b85c79a7
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev2/keymaps/oled/keymap.c
@@ -0,0 +1,43 @@
+/* Copyright 2021 yfuku
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+
+enum layer_names {
+    _0,
+    _1,
+    _2,
+    _3
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [_0] = LAYOUT(
+        KC_1, KC_2, KC_3, KC_4, KC_5, KC_A, KC_B, KC_C, KC_D, KC_E,
+        KC_6, KC_7, KC_8, KC_9, KC_0, KC_F, KC_G, KC_H, KC_I, KC_J
+    ),
+    [_1] = LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    [_2] = LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    [_3] = LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    )
+};
+
diff --git a/keyboards/dailycraft/sandbox/rev2/keymaps/oled/readme.md b/keyboards/dailycraft/sandbox/rev2/keymaps/oled/readme.md
new file mode 100644
index 00000000000..c0c3cb6eecf
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev2/keymaps/oled/readme.md
@@ -0,0 +1 @@
+# The oled keymap for sandbox
diff --git a/keyboards/dailycraft/sandbox/rev2/keymaps/oled/rules.mk b/keyboards/dailycraft/sandbox/rev2/keymaps/oled/rules.mk
new file mode 100644
index 00000000000..ab9d5c6ac2f
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev2/keymaps/oled/rules.mk
@@ -0,0 +1,2 @@
+VIA_ENABLE = yes
+OLED_ENABLE = yes
diff --git a/keyboards/dailycraft/sandbox/rev2/keymaps/via/keymap.c b/keyboards/dailycraft/sandbox/rev2/keymaps/via/keymap.c
new file mode 100644
index 00000000000..c2022842925
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev2/keymaps/via/keymap.c
@@ -0,0 +1,42 @@
+/* Copyright 2021 yfuku
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+
+enum layer_names {
+    _0,
+    _1,
+    _2,
+    _3
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [_0] = LAYOUT(
+        KC_1, KC_2, KC_3, KC_4, KC_5, KC_A, KC_B, KC_C, KC_D, KC_E,
+        KC_6, KC_7, KC_8, KC_9, KC_0, KC_F, KC_G, KC_H, KC_I, KC_J
+    ),
+    [_1] = LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    [_2] = LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    [_3] = LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    )
+};
diff --git a/keyboards/dailycraft/sandbox/rev2/keymaps/via/readme.md b/keyboards/dailycraft/sandbox/rev2/keymaps/via/readme.md
new file mode 100644
index 00000000000..f3c721ab107
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev2/keymaps/via/readme.md
@@ -0,0 +1 @@
+# The via keymap for sandbox
diff --git a/keyboards/dailycraft/sandbox/rev2/keymaps/via/rules.mk b/keyboards/dailycraft/sandbox/rev2/keymaps/via/rules.mk
new file mode 100644
index 00000000000..1e5b99807cb
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev2/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/dailycraft/sandbox/rev2/rev2.c b/keyboards/dailycraft/sandbox/rev2/rev2.c
new file mode 100644
index 00000000000..96aa6cd314e
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev2/rev2.c
@@ -0,0 +1,17 @@
+/* Copyright 2021 yfuku
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "rev2.h"
diff --git a/keyboards/dailycraft/sandbox/rev2/rev2.h b/keyboards/dailycraft/sandbox/rev2/rev2.h
new file mode 100644
index 00000000000..f5cc3de8a05
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev2/rev2.h
@@ -0,0 +1,37 @@
+/* Copyright 2021 yfuku
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "quantum.h"
+
+/* This is a shortcut to help you visually see your layout.
+ *
+ * The first section contains all of the arguments representing the physical
+ * layout of the board and position of the keys.
+ *
+ * The second converts the arguments into a two-dimensional array which
+ * represents the switch matrix.
+ */
+#define LAYOUT( \
+    L00, L01, L02, L03, L04, R00, R01, R02, R03, R04, \
+    L10, L11, L12, L13, L14, R10, R11, R12, R13, R14  \
+) { \
+    { L00, L01, L02, L03, L04 }, \
+    { L10, L11, L12, L13, L14 }, \
+    { R00, R01, R02, R03, R04 }, \
+    { R10, R11, R12, R13, R14 }  \
+}
diff --git a/keyboards/dailycraft/sandbox/rev2/rules.mk b/keyboards/dailycraft/sandbox/rev2/rules.mk
new file mode 100644
index 00000000000..d38a6180907
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rev2/rules.mk
@@ -0,0 +1 @@
+SPLIT_KEYBOARD = yes
diff --git a/keyboards/dailycraft/sandbox/rules.mk b/keyboards/dailycraft/sandbox/rules.mk
new file mode 100644
index 00000000000..b3386ed7712
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/rules.mk
@@ -0,0 +1,20 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = caterina
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+NKRO_ENABLE = no            # Enable N-Key Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+AUDIO_ENABLE = no           # Audio output
+
+DEFAULT_FOLDER = dailycraft/sandbox/rev2
diff --git a/keyboards/dailycraft/sandbox/sandbox.c b/keyboards/dailycraft/sandbox/sandbox.c
new file mode 100644
index 00000000000..9f9aa48190b
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/sandbox.c
@@ -0,0 +1,45 @@
+/* Copyright 2021 yfuku
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "sandbox.h"
+
+#ifdef OLED_ENABLE
+bool oled_task_user(void) {
+    if (!oled_task_user()) { return false; }
+    switch (get_highest_layer(layer_state)) {
+        case 0:
+            oled_write_ln_P(PSTR("Layer: Default"), false);
+            break;
+        case 1:
+            oled_write_ln_P(PSTR("Layer: 1"), false);
+            break;
+        case 2:
+            oled_write_ln_P(PSTR("Layer: 2"), false);
+            break;
+        case 3:
+            oled_write_ln_P(PSTR("Layer: 3"), false);
+            break;
+        default:
+            oled_write_ln_P(PSTR("Layer: Undefined"), false);
+    }
+
+        return true;
+}
+
+oled_rotation_t oled_init_kb(oled_rotation_t rotation) {
+    return OLED_ROTATION_180;
+}
+#endif
diff --git a/keyboards/dailycraft/sandbox/sandbox.h b/keyboards/dailycraft/sandbox/sandbox.h
new file mode 100644
index 00000000000..e9c9ff99c3d
--- /dev/null
+++ b/keyboards/dailycraft/sandbox/sandbox.h
@@ -0,0 +1,26 @@
+/* Copyright 2021 yfuku
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "quantum.h"
+
+#ifdef KEYBOARD_dailycraft_sandbox_rev1
+#    include "rev1.h"
+#endif
+#ifdef KEYBOARD_dailycraft_sandbox_rev2
+#    include "rev2.h"
+#endif