Whenever I’m travelling I always have two freshly pinned tiles at the bottom of my start screen. Before I leave, I use my phone to look up the hotel I’m staying at and the location I’m visiting (like a customer’s address) and pin them both to the start screen. That way while I’m in an unfamiliar city I can easily find my way back to either of the two major way points during my trip without needing to dig through old emails to find the addresses. Just click the hotel tile, then click directions and I instantly know how to find my way back to a comfortable bed.
Bonus points if you also add an additional tile for the local weather!
(posted from 35,000 feet with my phone already ready to guide me through the city when I land)