This is my first attempt at modifying stuff in TinkerCAD. The "yellow dot" squash balls really quieted down the printer and reduce the vibrations.
I printed them with a 0.6 nozzle, .218 layer height and 3 layers for the walls 4 for the bottom. they feel pretty rugged. I placed a small dab of rubber glue on the balls to retain them. The hardware is just 16 4mm x10mm screws with t-nuts attachment to the 20x40mm rails underneath the frame so they'll fit on any frame with those as the primary base.
I made these for my Cr10S so I could put the controller under it and 42mm squash ball feet should quiet it down and help with vibrations. But ended up opting for the shorter legs in the end.
I took the feet from https://www.thingiverse.com/thing:2880796 and added spiked legs. Autopsy Turvy made some sweet looking claws. Thank you Autopsy Turvy!!!
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/1je1P8Hkntb