The Find My app actually gives really good directions.

Yeah, I wish it could do that range-finding trick with a phone, almost worth putting an AirTag case on your phone just for that.

The noise is useless, however, I've been "within a foot" of the keys for 5+ minutes trying to find them - often the best is to have one person start moving things whilst the other watches the phone and screams when it says "it's moving".