[ Hey all of you who keep saying “tin foil”...,..,.I haven’t seen tin foil in years. Where do you get the stuff? ]
Well you can easily buy Aluminium Foil, but it doesn’t block the newer NSA and CIA mind control rays, you gotta buy actual TIN foil and that is rather expensive...
Made from actual elemental Tin, Atomic Symbol “Sn”.
http://en.wikipedia.org/wiki/Tin
You can make a faraday hat out of copper mesh, but that leaves you open for attack by the copper hoarding badits on craigslist...
(above post is sarcasm)
Tin was one of the Metal Men