Take a Travel Kit with You at All Times
Travel kits are tiny bags filled with travel essentials, minus the clothing. They’re invaluable when it comes time to freshen up during long waits at the airport or even while using the airplane restroom. Travel kits mainly consist of toiletries but feel free to bring whatever else you can fit inside of the bag.
It would also be nice if you could pack a small towel or cloth inside of the travel bag. Nobody likes dripping water from their faces while they make their way down the airplane aisle. Oh, and keep a few plastic bags in the travel bag to separate your wet toothbrush from the rest of the items.