Minecraft wiki entry for Superflat_survival, associated text: You can start a tree farm now. Wood can be used to make a shelter, make tools and a shield. When you build your shelter, be careful as you cannot acquire a light source until later, unless you fight several witches that drop some glowstone dust. You need 4 pieces for a glowstone block. If you have emeralds you can also buy some glowstone from a wandering trader. You can also increase chance leaves drop sapling by breaking leaves using fortune iron shovel dropping from zombie or zombie villager.