This is a snap-together case for the VisionFive 2 single board computer.
I have included both a slotted version (which you'll probably want if you just want to use it as-is) and a solid version (primarily for if you'd like to modify the design, as you want ventilation).
I made this in OnShape. You can look at my (honestly kinda terrible) CAD work here.
UPDATE: Added versions with mounting holes for a 40mm fan, one with grill and one without.
2023.4 UPDATE: Added a version of the bottom with 2.5mm pegs (thanks @JackT_601594 for telling me about the problem!) in both slotted and solid varieties. Also added a peg tester which is just a 3mm and 2.5mm peg, so you can see which fits your board better before committing to the full print. The pegs should be a bit tight, but not too tight.
Der Autor hat dieses Modell als seine eigene Kreation gekennzeichnet.