I started with a photo taken with the default camera app on my Android Hero HTC 4G at 8M:
We paid about $12 for these 8 lenses, and they are worth about that much. You can find Jelly Lenses on some of my favorite toy camera and photography accessory sites, but they generally charge $4 to $6 each for similar lenses. We found these on ebay and purchased them from an overseas vendor. We waited 3 weeks for delivery, so there was definitely a trade-off for the lower price.
I plan to carry the wide angle, close-up, star, and antique lenses on Android-phoneography adventures, and I consider the $12 money well spent.
I would love to hear from readers about alternative phone lens options that have worked for them, so feel free to comment below!