I designed an iteration to my previous mini-PC stand, which now allows for a modular stacking setup to be done. The base piece for each mini-PC is interchangeable, so it allows stacking many in a tower if desired. This one requires no glue to fix the pieces together, as the connector tabs tolerance allows for a press fit. You will still need 4x standard PC fan screws to attach an 120mm fan, and I would recommend a thinner profile fan due to space constraints. Again, just cut and solder a junk USB A or USB C connector and plug it into the back of the PC, which will spin the fan slowly and silently. This was designed for my work Beelink PC, which measures 12.5cm x 12.5cm x 4.5cm.