Hide this very well but below there is a picture of a house I built. Hide a chest in there or something that basically gives the player who found it something. Build 4 of them and have the chest in one of them each day randomly. The chest can only be opened up ONCE in the lobby for that day. MAKE SURE TO HAVE THE HOUSES HIDDEN IN THE CORNERS OF THE LOBBY MAYBE. This would be the MAIN Lobby.