Many years ago I saw a quilting tv show where the woman had developed multi-colored plastic backs that pressed onto the smaller curved quilting safety pins. A local shop found them at a warehouse for me, but no one else over the years has ever heard of them. I find they save my fingernails when sandwiching a quilt (I also use a grapefruit spoon to bring the pin head back up to close it). Has anyone else seen them, and maybe know where to find some more?