Use a lightning rod to create a Copper Mace with a lightning attack.

Use the sniffer to locate biomes.

Transport villagers with llamas by giving them the lead.

Use trial keys to lock chests, doors, etc.

Fill copper grates with water to create pipes

Upgrades to make decorated pots more useful.

Use ender chests with hoppers.

Paint, brush your pets, remove moss, farm string, and more with brushes.