I just ordered this flimsy-looking 60X microscope that attaches to an iPhone. Naturally, it's from Brando, that notorious purveyor of irresistible craptucular geekery that no one needs. It was $17.50 with free shipping to the U.S. I can't wait to try it!
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects