25 Best Back-to-School Gadgets

Can't be bothered with sweeping the floor of your dorm room? We understand — you've got other priorities. (We'll just leave it at that.) Let the iRobot Roomba 410 shoulder the burden of keeping your floors and carpets spic 'n' span. This 9-lb. (4 kg) discus-size robot is equipped with sensors that detect the size and shape of a room; once activated, it will work its way across floors and carpets, sweeping and vacuuming as it goes. The battery-powered Roomba is designed to maneuver around furniture and avoid treacherous staircases, and it should be able to polish off a couple of average-size rooms with a single charge — leaving you with little to do except empty the filter.

Price: $149