Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4699895.
This is a remix of a Raspberry PI 4 Desktop found at the following address...
https://www.the-diy-life.com/diy-raspberry-pi-4-desktop-case-with-oled-stats-display/
Optional Ice Cube heatsink: https://amzn.to/3rYFQ0w
I added additional vent holes and printable sides without the fan hole.
Instruction for this build are at the address above.
Update: Instruction for the Bullseye raspberry OS are at the following address:
https://www.the-diy-life.com/add-an-oled-stats-display-to-raspberry-pi-os-bullseye/
Update 2: added vents and sd access as well as a body for the PI3
You might need supports in the holes except for the vents if your print does not bridge well.
2024 - UPDATE For the New Raspberry 5 you may use the cases for the PI 3 and side covers for the PI 4... I recommend to not use the ice cube heatsink, rather use the Active Cooler for the PI 5... https://amzn.to/49ckSf2
I could not find any instructions for the LED Display and the Bookworm OS. So just print the case with no hole for the display.