I don't know about you, but I need more light in my Cupcake #379. I designed and printed an LED holder in the form of a light ring. It uses 3 LED's, 3 resistors, and gets it's power from the 5v used for the optical limit switches (which I removed after one day.)

Run the stl file through blender or similar, and then skeinforge with the "outside extruded first" box UNchecked in FILL and print. Ream the LED holes with a 5mm drill, install LED's, wire the LED's in parallel; with each resistor in series with the respective LED. Install the light ring on the extra length of the long 3mm screws, and plug it in. Enjoy!