This is not about crafting things for an emergency, this is about having to wait in the car for a half-hour, and despite my best intentions I still have not squirreled away a small spindle and fiber about my person, and I was getting fidgety. My oldest handed me a fast food napkin. I tore it into strips and twined it. Ah. Better. We almost always have a stash of napkins in the car, and the resulting twine is surprisingly robust, for a short stapled fiber stuck together with starch. So there we go, fidgets fidgeted with readily available materials.