Monkey Fist Keychain – A favorite among survival trainers and self-defense professionals, these Monkey Fist Keychains could be your best friend in an emergency. Nylon paracord rope wrapped and tied around an acrylic ball can also be unraveled and used for climbing, starting a fire, or setting up a makeshift clothesline. Traditionally used as a self-defense tool, these monkey fists also make a convenient place to hold your keys.