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

Trim with all the following smithing templates at least once: Spire, Snout, Rib, Ward, Silence, Vex, Tide and Wayfinder.

Find an underwater ruin.

Defeat an Elder Guardian.

Slide down a honey block to slow your fall. [Bedrock Only]

Move and place a Bee Nest, with 3 bees inside, using Silk Touch. [Bedrock Only]

Free fall from the top of the world (build limit) to the bottom of the world and survive

Use an Elytra to fly through a 1 by 1 gap while moving faster than 40 m/s.

Power a Furnace with Lava.

Spawn the Wither.

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

Receive a gift in the morning from a tamed Cat.

Trade for 1,000 Emeralds. [Bedrock Only]