LOUISVILLE, KY—Just Sunglasses employee Eric Thorp intrigued coworkers Monday with his ingenious plan to live in a storage-facility unit. "The rent would be, like, 50 bucks a month," Thorp said. "Those things are totally heated in the winter, you know. For another $50, I could join a gym, and shower there." Coworkers could find no significant downside to Thorp's idea, which no one in the world had ever thought of before.