Coke Fisheye Lens.

I was planning a trip to Paris so I HAD to have a wide angle lens for the awesome buildings over there. It needed to look cool as well (you know, Paris...). This Instructable will show you how to do both. Be sure to check out some pictures at the end of this slideshow.

Much of the credits of this I'ble goes to Patholio. I have just made a different lens support (closer to the body of the camera) and added a personal touch.

The front assembly of an ordinary 50 mm lens is used to hold the "fisheye" element of a 28-80 mm lens. Further, a piece of PVC rain gutter was cut and shaped to support the lens and to connect it to the body of the camera.
Finally, cosmetics came with a can of Coke (however Red Bull, Smirnoff and many other brands provide cool and colorful lens covers to customize your camera).