What is your small 'Wait, you can do WHAT?' tip/feature?

Nothing too big/endgame focused kind of tip, just some small QoL ones, like:

• you can push chests around without needing to remove the inventory.

• you can fill your watering can at your sink.

I'm starting a second playthrough after two years of not playing.

EDIT: I was expecting something like 5 useful tips, people, not 500! But thanks anyway! I'm reading through them all and will try to remember them.