How do you make an XP grinder in Minecraft?

How do you make a grinding stone?

How to make a grindstone in Minecraft
  1. Smelt 3x Cobblestone into Stone.
  2. Craft any type of wood into 2x Wooden Planks. This can be any type of wood, such as Acacia, Birch, Crimson, Dark Oak, Jungle, Spruce, or Warped.
  3. Craft the 2x Planks into x2 Sticks.
  4. Craft the 3x Stone into a Stone Slab.

How do you make a piston grinder in Minecraft?

How do you make infinite coal in Minecraft?

How do you make a Enderman grinder?