Since there's all this circuit board discussion, here's the circuit I came up with. Part of a video card, primarily chosen for the microchip. The lower right on the original appears to have a pretty prominent angled piece with a nice looking hole in it, so I cut another section of board and added a hole with grommet to try to match it. The shiny bits on the microchip and a few nearby are bits of watch mechanisms, TOS Enterprise photo-etch railings, and even a little 1/350 Nomad for grins (next to the curve of red wire). The blue capacitor is actually a hunk of plastic sanded to shape and painted, I couldn't find a real capacitor I liked.
I was amused that D48thRonin ended up with the same type of silver component in the upper right as mine (was on the board I started with!) on his amazing saber. Incidentally, man, those circuit boards are tough! I thought they would cut much more easily...
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