Create and fully power a Beacon.

Dry a Sponge in a Furnace.

Push a piston with a piston, then pull the original piston with that piston. [Bedrock Only]

Breed a mule from a horse and a donkey. [Bedrock Only]

Place 9 fully explored, adjacent Maps into 9 Item Frames in a 3 by 3 square.

Use a hopper to move an item from a chest minecart to a chest. [Bedrock Only]

Dye all 4 unique pieces of Leather Armor.

Connect three chests to a single furnace using three hoppers. [Bedrock Only]

Kill a Mob while wearing the same type of Mob Head.

Kill a creeper with arrows.

Create an Iron Golem.

Acquire diamonds with your iron tools.