Custom Lithophane box

The box is used for lithophanes. I made this particular box for my dad for his birthday (75). Mine operates off rechargeable Li-Ion batteries (16340), the holder module, through-hole perf board, and a TP4056 (type C) charging board. In order to use the TP4056, the battery holder modules must be wired (26awg) in series, otherwise it won't recharge them. There is also a slot cut out for the TP4056 charging port to mount at for easy access charging. 5mm OD flat LED's. Everything used for creation