Always carry power strips
If you have several devices, you will need a power strip not only in the airport but also in the hotel because the number of sockets in rooms is limited. Power strips allow you to keep all your devices nearby. A power strip will make you a hero in the airport if you allow other passengers to use it.
Don’t forget to get a power bank and fully charge it beforehand. Phone batteries drain very quickly, and this device will allow you to be free to not have to look for a place to charge your phone all the time.