Today I used Lego to try to see how small I could make my retro pocketcam.
I first drew out the dimensions of the components (3.7v 500mah LiPo, ESP32CAM + OV5640 Camera, IP5310 Boost Converter)

I then opened my big box o’ legos and tried to match the paper sketch with appropriate pieces.
Although I did make them a tad bit bigger cause tolerances exist, I think its nice.