I ordered some lenses for my cell phone camera. I know that sounds crazy. I certainly never had heard of such a thing, but Photojojo--a web site that is all things photography--has them. I got a fish eye, macro, and wide angle lens.
These tiny lenses stick over the regular lens of a cell phone camera.
I took this pic of my rings with the macro lens. Not too shabby for a little cell phone camera. The link for Photojojo is http://www.photojojo.com/ if you're into unusual camera accessories and photography tips. Fun stuff.