You can do the first few levels with business cards: http://theiff.org/oexhibits/menger02.html http://theiff.org/oexhibits/menger02.html As you go to higher l

You can do the first few levels with business cards: http://theiff.org/oexhibits/menger02.html http://theiff.org/oexhibits/menger02.html As you go to higher levels, that "infinite surface area" thing starts to become difficult to manage. ;-)