A dear friend of mine got this at a craft fair in Iowa, where she lives. She is not a knitter but the person who made it told her it was a knitting tool. So she got it for me, and I for the life of me don’t know what it is. Can anyone help? The little ring of beads has some stretch to it, so it could pass over the other beads, or off the string, so it might be a marker. But what would I use the rest for, and how???