Minecraft wiki entry for Traps, associated text: This is a trap that can be used to catch someone while they are out adventuring. You place TNT at various points around their house, prioritizing spots which are behind an input like a button or likely to be set alight by an unsuspecting player, like behind an empty fireplace. To finish it all off, place a few pressure plates near their bed with TNT underneath. If the player dies and respawns, they would spawn on top of the pads and cause an easy kill. Keep in mind that some servers would consider this sort of behavior cheating or griefing.