Originally Posted by TacomaJoe
Sort of looks like a clear self-stick rubber bumper.
Hard to tell, probably would be better if it was photographed next to a penny or something you can compare size to. Hands vary in size and we can't even see the fingers. My guess is that it is pretty small.
I have seen little balls about that size used in various pillows, in heated pillows used to soothe aching muscles, etc. In my house or TT, I would just ask the wife which hobby did this come from?
Also, those little desiccant pods they pack in various items to ship, I haven't ever opened one of those up?