Hotel safes can be great for keeping things like your passport safe when you travel. They can also be great for helping you accidentally leave things like your passport and valuables in a hotel room.
This week Travel + Leisure published a tip from a British Airways flight attendant for making sure you don't leave those things behind: put a shoe in the safe as well.
This only works if you put one shoe in the safe, not both, and you do it with the pair of shoes you plan on wearing on the plane.
The idea is that when you get dressed in the morning you'll realise that your shoe is missing and be reminded of the things you have in the safe. That way you'll be sure to leave with that passport and jewellery when you check out, not remember you left things behind when you're in a cab on the way to the airport.