About this 3D model
Remixed version of Patrik's squash ball holders (https://www.myminifactory.com/object/squash-ball-anti-vibration-feet-26726). This has an M5 hole inside to secure the holder to a holding plate. Also, in this version the squash ball will not fall out but is still easy to remove. I used double yellow squash dots for these cups. The heavier your installation gets, use squash balls with higher shore.