Fans of The Hitchhiker’s Guide to the Galaxy already know the first two rules of travel are (1) don’t panic, and (2) always carry a towel. Those two points out of the way, you might want to start thinking about a few other things that can make your life on the move much easier. Before you plot your next adventure using Inspirock’s trip planner, consider the following list of the best travel accessories to keep your trip running smoothly.