This is my version of the vibration damper feet for the CR10/CR10S.
Since I couldn't find a version compatible with the 3 holes of my printer, I decided to create this design from scratch.
They are flexible to facilitate the ball placement, but then you use a zip tie to give it a good squeeze and strength.
My advice is to use a two dots ball 'cause it's softer.
4 holes version, compatible with all the extruded aluminium profiles and t-nuts can be found here: https://www.thingiverse.com/thing:3400947
Squeeze your balls!