As for how to use them, I pictured lots of way. They can be added to a hair pin or clip. They can even be added to the prongs on a hair-comb, the kind you leave in your hair, up at the top.
I figured folks who were crafty could add a magnet. Or, they could add a pin on the back. They can be glued onto almost anything, or appliqued onto anything. They’d make cute attachments to key rings or cell phone or other electronic gadget clips. I think the ways to use there are unlimited.