I use doll needles when tying, but to make threading easier I have a "needle threader" that slips through the eye so the yarn or crochet cotton can be attached to the little niche in the threader and then you can pull the thread through. I have purchased a couple of different types over the years. They are flat and made of aluminum or steel. They are not the thin wire threaders. Anyhow, they work really well. I think JoAnne's or a quilting store would carry them, maybe even WalMart.