You arrange for the walls to close in on themselves until the contents of the room are squashed into a fine paste. Roger the Dodger installs a drain pipe so the solution can be collected, one polystyrene cup at a time, until you’ve ran out of cups.
You keep them in the fridge until you’re sick of the fucking sight of them and decide to dump the lot of them in a lay-by, ignoring the No Tipping sign.