Added bigger fans underneath my Ender 3v2, so it needed to be lifted. Why did I choose this design? Because I happened to have some chunks of 90x53x300 foam that I was already stacking the printer on. They provided good vibration dampening, but were firm enough to not deform or shake.

I added the one top I had to take a chunk out of to clear the PSU fan. edit: made a mainboard cover/fan that uses the same cutout riser. PSU cover - https://www.thingiverse.com/thing:4662559 Mainboard cover - https://www.thingiverse.com/thing:4683915

For myself, I cut it into 2 pieces for easier printing with no supports. I included the 1 piece version if you so desire.

This should work on the 3 & 3 pro, but I think the rubber pads aren't as thick. You might need to shave town the top edge or lose the dampening of the stock rubber pads.

Fusion 360 files included, I don't care if you hack it up.