I needed a clamp light at work- but didn't want to pay the price of one or buy something new- so I got my Creative Freak on and put one together myself. I found a clamp with a magnet on it and took a "Stick Light" one pf those LED lights that you stick up in a closet or somewhere dark, put some Velcro on the clamp and some on the light. And Presto- I have a light that clamps to ledges and such,or clamps on to my hat or coat pocket and as a bonus is magnetized so it sticks to pipes and other metallic objects. Makes working in dark spaces a whole lot nicer, and doubles as a flashlight!
The Velcro makes it nice to remove the light.