Solar Powered Door Knob
Do you ever get tired of looking for the keyhole, at night? Sometimes you remember to turn the porch light on, before you go out and other times you forget. Some of us even carry a little light on our keys for the very purpose.
One unique solution to the problem are solar door knobs. They actually exist. The door knobs are typically made of glass. The inner part of the door knob will light up the keyhole or have an interesting design that is illuminated with the solar lighting. Here is a link to a patent associated with solar door knobs: http://www.freepatentsonline.com/D464862.html
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