5. Earplugs
When all you want is to sleep, but no one around you seems to want to, earplugs are a lifesaver. Whether you’re in a crowded hostel, a train, or even while pitched up in your tent, you’ll be happy to have brought them along. It’s also a good idea to bring a few more pairs than you’ll probably need to give to fellow travelers, they’ll be grateful for the gift.