Oh man, it was funny as hell when I went to RadioShack to see if they had copper shielding tape. The guy was like, "Uhhhhh... Here's some electrical tape. We have copper wire." Brilliant!
I just went to the great orange land of home supplies and got some aluminum foil tape like you might use for taping together duct work. The way I see it, it's metal and therefor it must be good. I doubt I will be able to solder anything to it so we'll have to wait and see if it actually works in the end.
The tape on the front is just regular:
But the back glows like an orb due to the radiation treatment I gave it in my secret lab:
I used the cheapest stuff they had which was really thin so there's a couple layers. I'm probably gonna try to finagle some sort of way to attach wires to them so the stuff in the pickup cavities especially might actually do something other than look pretty. I'm also gonna poke some holes in it so I can, you know, assemble the guitar and stuff.