Arriving home and being home are separated by a small amount of work. Until the last thing is out of the bag, part of you is still in transit, and the half-unpacked case in the corner keeps the trip technically ongoing for as long as it stands there. Endings need a physical action, or they stay open and quietly take up room.

Finish the unpacking, even at a low standard, before you sit down. The same holds for other things that need closing: the last message, the returned key, the box taken out to the bin. A small final act lets the mind file the thing as done.