Alexander Morris lugged a camera around everywhere during high school, making him the unofficial class photographer. Even after he graduated last year, his alma mater in Antrim, Northern Ireland, asked him to document its 2013 prom. Morris couldn't resist. In addition to traditional shots, the organizers wanted a photo booth. Rather than spend money he didn't have to rent one or hire an assistant to man a camera, Morris built a stylish booth that could run itself.