I re placed My Apple TV and 3d Printer computer with a 2006 Mac Mini. To try to keep my work bench Clear, I made another wall mount. The other bonus is the increase air flow around the computer.
I added a Fan Mount to the bottom. It's a 70mm x 15mm 12vdc fan. First I zip tide it to the mount, and then I couldn't stand the look of it. So I added the mount and now have a great way to aline the mount.
The fan screen was made, because my fingers keep getting clipped.

I printed this at a 15%fill and 3 walls. All Screws are #8 size, fine machine to put the pieces together and tapered head wood screws.You will need 4 wood screws and 6x2inch fine machine screws.