Minecraft wiki entry for End_survival, associated text: One of the advantages of living in The End is that it is far easier to build an enderman farm or grinder. These take a lot of effort to make but are extremely useful after making them. If the player wants to learn how to learn how to make one, see enderman farming. Enderman farms are useful, as enderman drop experience as well as ender pearls, which can be used to teleport or crafted into eyes of ender, which are used to make end crystals and ender chests.