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After reading several papers on this I think that the hardest issue would depositing the GO and electrolytic layers on a CD substrate. Although there are some fairly reliable and not terribly difficult methods I doubt many would have the materials at home. I would love to try this but I'm a poor student. I may see if I can locate some GO onthe chem labs this summer when no ones around.

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Their paper [1] show that it is actually quite simple, glue a PET layer to the CD, then deposit graphite oxide solution and let it dry overnight, to then put it in the lightscribe drive. They also explain how the supercapacitor is built with the electrolyte and how to make the electrolyte yourself, the hardest part from what I've read is actually getting graphite oxide.

[1] http://www.sciencemag.org/content/335/6074/1326.abstract

It's graphene, especially tiny bits of it, a bit of a biohazard also? (Think asbestos)

I've never heard of any health risks. People seem to handle graphite pencils ok (OTOH, coal dust isn't exactly the best thing in the world for you, but it is hardly asbestos)

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