Refrigerator Security

One of my pet peeves is when kids open the refrigerator to "just see what's inside;" hence, one of the first rules we go over starting the very first day of class is that no students are allowed to touch the fridge or the freezer! There's always one or two that want to test this though, and when there are so many things going on during a lab it can be difficult to catch them in the act. So, a couple of years ago I began installing these in my refrigerators:

Refrigerator alarms! You can pick up a two pack at WalMart for about $10. You install them so that the two pieces are less than half an inch apart, and then they are activated when they are separated. I install them on the inside so that they are hidden (and can't be slyly turned off or "borrowed"). You can choose either a chime or an alarm sound, both of which are loud enough to easily hear from across the room. And it scares the crap out of the first kid who tries to sneak into the fridge! It is hilarious - and even better, mucho effective at keeping the little rugrats out. Definitely a worthwhile investment!