While watching through my door’s eyehole, I noticed something really interesting.
A common product in everybody’s house, the eyehole, actually provides a fisheye view. That gave me the idea of decorating my camera with a fisheye lens. I bought one from a hardware store, the biggest eyehole I could find, put it in front of my lens and voila! My camera can take 170 degree photos.
The main thing to have in mind when buying an eyehole is to buy one big enough so that your lens will “see” through and it will align perfectly with your lens.