Actress sleeps in box , Tilda Swinton is performing the art of sleeping at New York City's Museum of Modern Art. A museum spokeswoman says the "Moonrise Kingdom" star presented her one-person piece called "The Maybe" on Saturday. In "The Maybe," Swinton lies sleeping in a glass box for the day. The exhibit will move locations within the museum every time Swinton performs. Readmore at Actress sleeps in box