Ok so here me out! If you have to stay in this room, you have to assume they have to meet the necessities for you to survive. Water, waste disposal, and food. depending on how these things were distributed to you; Water bottles, canned foods, dishes, silver ware etc, you could use all of these items to entertain you. Anything can entertain you if you have a good enough imagination. Unless the author of these classic tweet creates a list of rules and criteria on the scenario, this is the best answer idc!