I learned of this tool through the sewing with children blog, 'Sewing School', and the Sewing School books of truly kid-created projects that actually teach hand sewing in steps. Love that source, and they certainly steered me right on recommending this specific threader, and the need for it. I've never used a threader, my mother taught me hand-sewing when I was five, without one. And I have good memories of the process and the projects passing them on to those of my kids who were interested.