Re: In regard to the thickness and quality of tinfoil...
I find 10mm eminently satisfactory but favour Ag over Sn on account of its superior conductivity. Rather heavy though.
That said, you should conduct your own research into the subject rather than trusting the word of a random AC on the interwebs. Natch. How do you know I'm not working for Microsoft FFS?
A well fitting silver zentai suit has the added benefit of tarnishing to an impeccably appropriate shade of black -->