You'll attract the attention of the other geeks in the room when you carry this ThinkGeek-exclusive Mathematics Canvas Crossbody Purse as your (a)cute, daily go-bag. It's the only rational choice. You'll be studying the sets of printed math concepts together, regaling each other with stories of your computational exploits. Together you can bond over measured angles, physics equations, sound waves, chemistry compounds, and, of course, pi. The black and white grid/graph paper background can even help you plot Cartesian coordinates if you're up against an
asymptote a deadline.