I needed some feet for a 3.5" WD Red hard drive and quickly designed some in Fusion360.
No supports needed! Lay flat on the bottom side where the hole is (see last image).
The hole was designed with the following technique and prints great as is (no supports needed!): https://hackaday.com/2020/05/17/look-ma-no-support-for-my-floating-holes/
You'll need two classic #6-32 UNC “computer screws”.
The author marked this model as their own original creation.