Small spirochete earrings. My mom has Lyme disease and for Christmas we bought her Lyme spirochete plushies from GIANTmicrobes, and she thought it was a riot. So when I learned how to crochet spirals, she requested I make earrings to match them!

They can be purchased (in lots of colors!) at my Etsy store, if you so desire.
http://www.etsy.com/shop/juliamon