
One from the "why didn't I think of THAT" department: a fisheye lens from a standard peephole just like in your front door. You can pick up a peephole (sans door) for around $10 at most hardware stores and be shooting cool ultra-wide-angle, amusingly distorted images with your point-and-shoot digicam in the time it takes to simply tape it to your lens. Adding similar capabilities to a fancier DSLR can easily cost 50 times as much. Yay, cheapness!

Every year, PopSci honors the top 100 innovations in categories such as consumer products, medical tech and engineering.
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Will vehicle traffic in Manhattan be reduced by 10 percent or more?
Will the PlayStation 3 outsell both the Xbox 360 and the Nintendo Wii by the end of 2009?
Will vehicle traffic in Manhattan be reduced by 10 percent or more?

