I tried a few other designs but none hit the spot for me. This is inspired by many others, but as minimal as I can get it.
To my horror, I found the left and right side extrusion of my Ender 3v2 is dimensionally different, so these were loose fit on the right, and tight on the left… so you may have to fiddle around a bit to get it perfect for your machine.
Use the original rubber feet, there is probably plenty of adhesive left on them to stick ok.
I find these take at least 1mm of uneven surface, and absorb a lot of noise from transmitting into my wooden bench.
The author marked this model as their own original creation.