I had a couple of rulers handy so used one as a shuttle and the other as a warp stick. You can make a shuttle out of a piece of cardboard. When I wove with the kids we used short pieces of yarn or the mylar bag strips or some ribbon, etc. So did not really need a shuttle and they used their fingers to open the warp. A crochet hook or bent wire would also work to open the shed and pull the yarn though. Be imaginative!