I spent four months in 2017 seeing the 18 states I had never been to before. I thought I’d packed everything: I had the tent, the sleeping bag, the sleeping pad, the single-burner propane stovetop and two one-gallon jugs of water should I get stuck in the desert (which I almost did when a spark plug blew in Arizona). I even had a backup to my inflatable pillow. But what did I forget? Scissors.