The majority of these photos were taken by placing a lens that I removed from an old JVC Compact VHS video camera. The lens actually had five component lenses within when I removed the main housing. I placed the lens over my iPhone lens and got in as close as I could.
The other lens I used came in a set that includes a Fisheye, Macro, and a Wide Angle in the set. The lenses are made specifically for mobile phones and well worth the price if you’re into stuff like this. I ordered mine from the PhotoJojo.Com store. They have some fantastic camera goodies