So I won an auction on ebay for what would appear to be a very old little tool for knitting.
The instructions are hilarious, it explains how this wonderful (pat applied for) item will save you from the use of profanity while doing the relaxing craft of knitting!
You wind the wool around the star shaped bit and the expandable bracelet goes on your wrist. It holds the ball off the floor so it doesn’t roll away from you and pick up dirt! Ideal for travelling with =D