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SMCM Mathematics Klein Bottle Openers!
Every math major at SMCM earns herself one of these during the annual spring Awards Ceremony. What exactly is a Klein Bottle? It's the non-orientable surface with no "inside" or "outside" pictured on the opener. When trying to figure out the graphic, it helps to know that it says "SMCM Mathematics". Wikipedia has a good entry with more info on Klein Bottles.
Here's Sandy at the very first ceremony explaining to students what a Klein Bottle is: