When our trivets feet fell off from general wear and tear, it started to scratch the work surfaces, and I had a leftover Sugru in the back of the fridge. I had my solution.
Step 1: Add the Feet.
not much detail here, just hoping to help you notice things that need fixing.
I split the packet into three, rolled into balls.
I pushed it onto the ends and tapered the ends and smoothed the balls with soapy water.