I found a sheet of these little tiny velcro-like adhesive dots. I think they must have come with some product I bought a long time ago and most of them were used in its assembly, with a few left over that I threw in a junk drawer. The problem is that I found another use for them and I want to get some more. I don’t know what they’re called or who sells them. “Velcro dots” on Amazon just gives me large circles of regular velcro. These things are super thin.
I’ve been using my GF to cut out sandpaper from full sheets (velcro backed) for my odd shaped sander. It’s much cheaper than buying pre-cut. This I’m sure would work for cutting out whatever size velcro dot you need from a roll or sheet.