Compass
Compass
Absolutely essential for long-distance walkers, a compass is also surprisingly useful in large cities. Unless you have a gyroscope in your head, it is very easy to come out of a subway station disoriented, or to set lost in the maze of streets found in some old cities. A quick glance at your magic compass solves this problem, and will greatly impress your fellow travelers. Get one with a little mirror and a case, for both the protective case and the cute little mirror.