Big Brother Comeback

You live with your big brother in a flat share. He's a downright tyrant. Luckily he is on a world tour since yesterday. That was cause for celebration for you. Without further ado, you converted his room into a party room and celebrated extensively. But now you have a huge problem. Your brother just called to say he's on his way back. His flight was cancelled. He'll be there in an hour. Until then, the room must look like it did before the party, otherwise there will be a lot of trouble. You have a lot of crazy things to do and a lot of surprises await you.