A wasp snuck into my apartment through the back door left open for some much-needed ventilation. It seemed peculiarly attracted to bright lights, (I thought it was mostly just moths that did that?) and therefore reluctant to leave the apartment. After much frustration, and failed attempts at spraying it with bathroom spray cleaner (too high up to reach it) and thwacking it with duct tape covered broom handles (duct tape: not sticky enough, sadly) the thing that worked was turning on the projector (and turning off all the overhead lights) and drawing a white circle in The Gimp on a black background. It worked enough to get a plastic food container clapped over the little fucker and to take it outside.