Needed a container to store dried hide glue in, for my primitive tool kit.  I selected a pithy stem of a Jerusalem artichoke, and hollowed it out.  Sealing the butt end with a plug and pitch, I wrapped the open end with sinew, to keep it from splitting when the stopper was wedged in.  The tube also made a good core to wrap and store rawhide cordage.  Now, need to make a few more for mineral pigments.