Original feet of Logitech ERGO K860 keyboard are very fragile. Mine lasted only couple of days. After trying to fix them a few times with (a strong) glue, I designed these stronger replacements.

https://youtu.be/2S06gbFDfJY

I printed these in PETG, 0.175mm layers, 0.4mm nozzle. They seem to be very durable. I have been using them for 5 months without any signs of wear.

The pegs need supports to print. I included also a model with built-in supports. Just use small wire cutters to remove them after printing.

There is a slot for the original anti-skid pad.