This just arrived in the mail from Hong Kong (via usbfever.com):
You can either just hold it up to your cameraphone’s camera or use the included metal rings (with tape) to attach it magnetically to your phone:
Here’s the wide angle lens attachment:
and the fisheye lens attachment:
which was a little misaligned when I took the photo :(
Pretty cheap cameraphone fun.
Update: corrected the link to the proper Wide Angle lens I ordered.