Do you ever pack these easy things? Maybe you should…
Reusable water bottles fit just about anywhere. You can fill them at water fountains, cafes, or the hotel sink. Or, purchase a large bottle of water and refill your smaller ones.
Laundry bags keep your dirty clothes separate from clean clothes in your suitcase. Throw a dryer sheet in the laundry bag to keep the dirty ones smelling a little better.
Make a First Aid Kit by adding some band-aids, individual packages of antibiotic ointment, some moleskin, and aspirin or other pain reliever.