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

Activate a Conduit.

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

Tame a Horse.

Relieve a Blaze of its rod.

Trigger a Pillager Raid.

Using the Frost Walker boots, walk on at least 1 block on frozen water on a deep ocean.

Smelt wood trunks using charcoal to make more charcoal.

Craft and place a sign.

Trade for the best possible price.

Use Shears to obtain wool from a sheep.

Construct a better pickaxe.

Catch and cook a fish!