Tiny USB powerbank

I was looking for a smaller (shorter than an 18650) powerbank for very small and low-power applications.

I stumbled upon the T6845-C powerbank charger/booster/protector board (can be had for a few dollars) and it suited my needs sufficiently.

I used a small pouch cell that I had lying around, which was 38x25x6mm. You could use a larger cell if you increase the dimensions of the case, or can extend the battery-side of the box to allow a few stacked cells.

The material i used was clear 2mm acrylic (I haven't yet found a good cheap source for cast acrylic