I use a clamp on light, with the clamp and reflector removed. A CFL light bulb and a Tennis Shoe box. Most tennis shoe boxes have a small hole on one end. Perfect size. I use a CFL bulb because they are cooler. Just put the bulb in the box, turn it on, close the box and you are ready! If it isn't bright enough, use a higher wattage bulb.
Good luck!
Good luck!