Lipo Charger
I got a lipo and a charger lying around, being used to charge stuff (really?), so I designed a case to have everything together and make the whole thing durable.
Just use a couple of m3x10 screws to hold both sides of the case together.
BOM:
Adafruit powerboost500
6600 Lipo Battery
Mini Slide Switch
M3x16 Screws