So I've really been enjoying a lot of cheap jewelry on my days off and I really liked these slip-on false nails (it's actually a really fun stim like putting bugles on your fingers and clickety clacking them and tapping them on things) but they keep popping off the metal tabs on the rings and sometimes they're a lil uncomfy so I was trying to find little foam discs to put on the underside of the nails over the metal tab part of the rings that they're superglued to for extra structure and comfort but I can't find any small and thin enough. These ones are kinda small enough but they're still about 2x too thick and all my attempts to trim / thin them have gone poorly. The diameter isn't an issue that's easy enough to trim down but I need thinner ones (and without glitter, a bunch of them are craft supplies with glitter which would be very messy and scratchy). Any thoughts? Here's some reference pics with what I have now and the thumb and pinky nails for scale.
Try searching for "furniture feet pads", I think that's what you might be describing? However my concern is that they will all be too stiff to attach to the curved nails nicely.
Instead, could you line the insides of the nails with thick pieces of felt from a craft store?