Meant for a Raspberry Pi 5 (mostly reset button, the others will probably fit as well) with a pin extender, a SEEED 4 channel SPDT relay board and a Waveshare 4 channel ADC hat.

It was mostly a challenge for myself to print it foldable, but it means all walls are really strong and print fast.
The folded corners will show signs of strain and get white, but in black PLA you can just trace them with edding :D