Hello there, long time no Post! :D
Having my fill of chain emails, about cell-phone dangers, I've already made one Instructable, but I've recently looked at all this trashed Tetrapak carton, and figured, this way, you've already get the Aluminum foil, inside the cardboard, one less hurdle!
So I went on, and made this Tetrapak radiation shield Instructable, and BAM!
It struck me, again, now, free waterproof cardboard,
anyone can use this for...
I think I'll make some kind of Proof-of-Concept Project, soon...