The Altoids one is the one I love.
I have two places in my home w/ Altoid tins on their edges, a la this guy:http://www.flickr.com/photos/matthew_moss/4209399652/
So I set my DD up with a set of them for her desk drawer at college.
She told me that at the end of the year, they were cleaning out the dorm room and found an Altoids tin under her roommate's bed. She opened it up to find out what was in it, and was really, really confused, because it had mints.