Sims, The Easter Egg - Santa Claus

This easter egg lets Santa Claus pay a visit.
First, go to the room you want Santa to appear in(Or build another room). Delete one wall. Now the game thinks the room is part of the outside, so you can put a christmas tree in it. Put the wall back up.
Get a table and put a plate of cookies on it. Put a fireplace in the room.
Make sure all of your Sims are in bed before 12:00AM.
At 12:00AM you will hear sleighbells. Go to the room with the tree and the cookies in it. Santa should be there, eating the cookies. Santa also leaves random presents for each sim.