If you are talking about beads with the through hole, have you considered just wiring them? And I have purchased interchangeable bails, so I can just switch one bead for another also, on Etsy but it has been a while so I can't remember the seller.
On the chance that you have never done any wire wrapping before, here is a short video showing a couple of ways. I usually just use wire, and make a small loop on the bottom, but the headpins make it even easier. I bought some little bails that I can hook on the loop I make if I want it to look more "finished" too.
https://www.youtube.com/watch?v=oRxiOGXfHiw