Our kitchen sink came with a stainless steel grid to protect the bottom from scratches. The grid had plastic or rubber feet that eventually wore out and became gross. Lots of websites sell replacement grids, but I couldn't find anywhere that sells just the feet. Luckily they are quite easy to model and print.

My sink takes 8 feet so I print batches of 16 and just throw the old ones away after six months. I've done them in both natural TPU and black TPE, although I imagine many filaments would work fine.

Includes Fusion360 file.