I made these monster stitch markers for myself a few months ago. The problem is I am multi-craftual and I needed some stitch markers for knitting a pair of socks. But, I didn't want to break out the clay to create a whole new set of stitch markers.
Just Buy Some Split Rings!
Really, you could just use them alone. But they aren't very pretty and it would be very easy to lose it with just the ring there.
My little monster stitch marker hopped right on that split ring and now he is happily pretending to be a stitch marker for knitting even though he's really a crochet guy!