A simple Rasbarry Pi tower, no screws needed for other than fastening the pi to the shelfs.. guess you could do that with a zip-tie aswell.

The legs have a rail in one side (2mm wide), so you can design and print sides if you feel like it. The legs pressfit together, in a way so they don't slide apart when picking up the tower.

When you print a set of legs print two as-is from the file and then print two that are mirrored. That way, you will have the rails facing each other so you can put in sides for the tower if you want some time in the future.

The shelfs are 1.9mm thick. The slots in the legs that you press the shelf into are 2mm. Its a tight fit, but you'll manage im sure! Designed for 0.2mm gap between parts that pressfit together. if your printer has different tolerance, shrink/enlarge accordingly.

Legs comes in different lengths, where the smallest at 35mm will fit a pi that does not have silts.