Acquire 30 Emeralds by trading with villagers or mining.

Trigger a Pillager Raid.

Find an underwater ruin.

Construct an Enchantment Table.

Relieve a Blaze of its rod.

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

Construct a Dispenser.

Use a Grindstone to get experience from an enchanted item.

Create an Iron Golem.

Craft and place a Flower Pot.

Kill a creeper with arrows.

Bake a cake using wheat, sugar, milk and eggs!