I have found some interesting, affordable pins at antique stores and second-hand shops. Also, I never go to a craft fair, flea market, bazaar, or tourist trap without an eye for the brooches and pins. I've let many good ones go, just because I really didn't need yet another pin. "New Age" shops often sell affordable silver jewelry - occasionally you'll find an unusual pin there. You're in Arizona? Surely you'll find native American artisans and hippy-trippy craftspeople in your region. Don't worry about having exactly the right pin - just enjoy the hunt for one.

Regards,
Rex.