Add a few feathers and some acrylic paint, and you're set, presents for all your friends for a year!
You can also add odd beads or medallions you might find at street sales, or re-purpose parts of other earrings.
For these ones, I also reused earring backs I had from old earrings I no longer wanted. I Just soak them in rubbing alcohol or vinegar and you're ready to go.
