The screen through which the light shines is made of a milk carton. I bought a half-gallon plastic milk jug and drained it (into my belly, not the sink), and then took scissors to the thing. I traced the frame onto the three large flat sections I ended up with, and cut along the traced line, so that I ended up with three pieces of plastic that all fit perfectly, more or less, over the base. I glued all three bits together using Elmer’s all purpose glue.

The light comes from blue LEDs…I think I used six, but I don’t recall exactly. I redid this bit a couple times to make the light more even. Basically, though, all of the LEDs were wired in parallel. For those of you unfamiliar with the term, it means that you have two parallel wires (nodes), and all of the LEDs bridge the two wires, as opposed to all of them being daisy-chained along (also known as being wired in series). This means that the voltage across each LED is the same, ensuring they each give off the same amount of light. One of the two nodes I placed at the center of the frame, and all the LEDs stuck outwards from there, like spokes. The second nodes was a wire that followed the perimeter of the frame, and attached to each LED as it passed. One of the nodes also had a wire that attached to one side of a switch. The battery holder that I scavenged from a kit of fiber-optic glo-wire was placed in one of the two holes and glued down, and the switch was placed in the other. A wire connected the one of the battery holder leads to the switch, and the other lead went to the other node on the LEDs. 

All wire attachments were soldered together, then covered with electrical tape to protect and prevent shorting. A little bit of a can of frosted-glass spray was used on each LED to disperse the light better. After testing to make sure it worked, the plastic cover was glued onto the frame (though in retrospect, two-part epoxy would have been a better choice), and sanded to match the exact contours.