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

Respawn the Enderdragon.

Create and fully power a Beacon.

Construct a Dispenser.

Gain the trust of an Ocelot.

Create an Iron Golem.

Play a music disc in a Jukebox.

Mine 1,728 Cobblestone and place it in a chest.

Trade for 1,000 Emeralds. [Bedrock Only]

Trade with a villager at the build height limit

Kill a creeper with arrows.

Eat a Notch Apple.

Travel by minecart to a point at least 500m in a single direction from where you started.