Overall build quality: We considered lockboxes made from metal, hard plastic, flexible EVA (ethylene-vinyl acetate) plastic, and thick canvas, taking stock of how each felt in our hands and identifying those that felt sturdiest. We looked for boxes and cabinets with smooth-opening hinges, clasps, and zippers, and we also assessed the locking mechanisms, taking note of how easily a key turned in a lock or how smoothly built-in combination dials spin. You’re more likely to keep your goods in a stash box if it’s convenient and easy to use.