Minecraft wiki entry for Player_versus_Player, associated text: This house is the trap of them all! Make the house look very inviting, iron blocks behind the glass, chests everywhere, and maybe a sign that was "supposed" to be to a friend for a secret entrance. They walk in the door, see the chests, and open them, only the chests are trapped chests! When they are activated, you can have them shoot arrows, lava, or even TNT! Make sure to add a piston that blocks the door when the chest is opened too!