When does 18 feet of military grade paracord not come in handy? I mean, come on. If you agree, maybe you should invest in one of these Survival Bracelets. The bracelet is made of knotted cord that can be unwound in the case of emergency. If you purchase the bracelet Survival Straps they are willing to retie the bracelet after use, as long as you send it back with a (true) story about how you used it.
If you are not interested in the story factor (which I think is the main selling point) you can always make your own Paracord Bracelet with these how-to instructions from Instructables.com.