Ted -- I like the idea of the tie tack-type pins. Now I'm on a quest. Or maybe I'll check Michael's and Hobby Lobby first. Then I'll be on a quest.

Shaw -- do you mean, say, a square of leather that both ends of the pin can go through, or two small pieces, one at the top where the pin would go through, and one at the bottom, where it goes back through again?

I'm not optimistic about the search for tie tack-type pins, so the leather may be the thing to do.