By far the best yarn needle threader! I've tried many many over the years, and the simplicity of this flat metal threader is a thing of beauty!  Sturdy, thin enough to use with tapestry and chenille needles as small as size 24. I keep one attached to a small magnet inside my homemade needle book, another in an Altoids tin that I converted into a needle holder. It can also be worn around the neck. Under two bucks, and no fragile wire to break.