I believe the moniker "Lazarus" has been touted!
I wouldn't go too hard on the idio... students. In these modern times, this is a relatively small prank, and it sure beats having them shoot people and blow things up, or even running up purchases under your name. Though I don't guess this makes you feel better about relative strangers getting into your personal effects and disarranging a part of your life, while leaving you feeling vulnerable.