This is a small stand/holder designed for a standard 120mm fan which can be mounted to any surface using screws.
It costs less material than any other stand I found and takes very little time to print.
It also takes up almost no space (mounting holes are under the fan, so mount the stand to the surface first).
- Wall thickness = 3.4 mm
- Fan hole d1 = 7mm, d2 = 5mm
- Mounting hole d = 5
It is customizable which means you can change the hole sizes and other parameters.