Solar Boy DMG
NOW YOU'RE PLAYING WITH POWER! SOLAR POWER!
The Solar Boy DMG is a solar powered battery pack for the Game Boy DMG. It uses a small solar panel, and a large Li-Po battery for storage. It latches onto the unit like the magnifying glass called Light Boy (Not to be confused with the Game Boy Light) There's a guide for the build, and here are the required parts:
UPDATE:
Now you can use a USB-C port to charge the Solar Boy, too, if you can't charge it with sunlight!
5V 60mA 67.2 X 34.7 solar panel: https://www.aliexpress.com/item/1005002777632698.html
1N4007 diode: https://www.aliexpress.com/item/1005006018892807.html
MTS-102 toggle switch: https://www.aliexpress.com/item/1005004161938213.html
3.5mm X 1.35mm X 1m DC power cable: https://www.aliexpress.com/item/1005006008742006.html
ND0412SA 6V step up module: https://www.aliexpress.com/item/1005001419105670.html
TP4056 Li-Po/Li-ion battery charger: https://www.aliexpress.com/item/1005004320030855.html
3.7V 4000mAh Li-Po battery: https://www.aliexpress.com/item/32920960316.html