Rubber feet coming off

[ab1jx]

3 of mine are now missing.  After 20 years as an electronics technician, I'm not surprised.  Stick-on things generally come loose.  BUT, each one is over a hole in the case.  It should be possible to replace them with feet that attach with machine screws that go through the holes and have nuts inside.  Might need to be thin nuts, I haven't tried it.  Or put the heads of the screws inside and use something like toothpaste tube caps as feet, tighten the nuts inside them with a nutdriver.  Or find feet that are threaded inside, put screws down through the holes into them.  GC Elecctronics used to have a bunch of that stuff, now I'd try maybe a Newark catalog.  Or Aliexpress.

Something here is bound to work, but there are 5,300 to look through.  https://www.newark.com/w/c/fasteners-mec...ts?st=feet

Or (but I don't want 100 of them) https://www.aliexpress.com/item/32992934...web201603_