Sneak next to a Sculk Sensor without triggering it

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

Use a Grindstone to get experience from an enchanted item.

Collect any fish in a bucket.

Name a Shulker Box with an Anvil.

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

Use a Dried Kelp block as fuel in a furnace.

Defeat an Evoker.

Dye your bed a different color.

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

Poison a Witch with a Splash Potion.

Stay underwater for 2 minutes.