For things like vocab quizzes, my teacher would always give us a few minutes before the quiz to study. Often you can write on desks with pencil- copy what you need down to the desk, put it on your paper, and then erase it.
Another thing someome did was take the whole vocab sheet, print it out size 2 or 4 font, past it to the bottom of his non-dominant hand, and "rub his forehead in frustration" to see the see. Only thing with that is that you have to be really careful not to get caught.

This is absolutely rediculous. I'm an AP student, a senior right now, and I've been bringing a Leatherman to school for two years now. I'm in an engineering course and I've found it endlessly useful to have it there instead of having to walk across the room and get a knife from the toolkit. The teacher has even complimented me on my tool!
This is rediculous. But I guess it goes along with the government's paranoia about pies on airplanes and Cat Stevens.