Pi Bumper but with slightly smaller holes to fit M2.5 and M3 screws. I also included the .f3d and .step files to make it easy to customize. There is also now a model that allows the use of the GPIO pins.
M2.5 or M3 x12 (or longer) screws.
Note: When using M3 screws, the holes on RPI might need to be widened slightly with a drill bit for a proper fit.