A minimalist cooling solution for RAMPS: allows attaching a 60mm fan such a way it can be easily removed to tune the stepper drivers. 60mm fans are the exact same width as RAMPS and are less noisy for the same airflow than 40mm equivalent.
UPDATE: v2 version (pictured in gray) is slightly taller: 27mm clearance to PCB. That allows it to sit on top of thermal fuses as well.
Additional parts needed:
1x 60x60 mm fan
4x M3 16mm socket head screws (or 20mm depending on the fan) - 4x M3 nuts
Note: Watch out for the reset button on RAMPS.
I used 0.33mm PLA with 100% infill but the settings are not critical for this part and should be no challenge to print in most printers. The legs are supposed to be a slightly flexible to allow it to slide across.
Note: it is symmetrical and as a result it will likely not snap in tightly everywhere because of the solder blobs or terminals that are in the way, but it should still do a good job holding the fan vibration free.
I enjoy designing minimalist-functional 3D objects.