Soundless chunkloader 1.6 - 1.8.4. it simulates the presence of a player (load teritory 16 * 16 chunks (256 * 256 blocks)). It is useful on the server! If you set at home this mechanism, in a radius of 128 blocks will be loaded chunks (even when the player is offline plants will grow, work mechanisms and so on. Does not overload the server, which is important when working not making a sound!
Lighthouses - decorations and is not needed for operation of the mechanism. To activate the mechanism on the ceiling there is a chest in which to put the tool.