Prototype LED color puck.

This is something I experimentally made way back in 2007. I often prototype direct to an etched PCB, so sometimes some random errors slip in. Particularly when I do it late at night. In this case I made two errors. I put an extra dot in my domain name and I missed a track. Both easily fixed if I ever revisit this project again.
The idea of the color puck is simply to provide an illuminated highlight on a shelf or table. It has either two or three holders for AA style NiMh cells, and LEDs around its perimeter. When fitted with a set of batteries it will glow for a very long time.
I was considering making some of these in other shapes.