Materials needed:
Fiber Fill (those found in stuffed toys)
LEDs
Button cell battery (CR2032)
a couple of strong little magnets
some paint
To begin, measure the amount of fiber fill needed for your desired effect, here I just painted it yellow and black. There are several techniques out there on how to shape the fiber fill, some use hair spray. I think the paint I used was good enough to stiffen the material. I wanted to depict another small gundam (astray red frame) went through the huge psycho gundam. Shown here is the back portion of the huge gundam.
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The batteries would easily attach to the magnets. On this project, I used a total of four individual LEDs.
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Here it is with lights off and on
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The battery lasted about 48 hours.