I also have the Bohin one that Nan linked to and love it but I do find it does not work with heavy specialty threads (12 wt and 8 wt) commonly used for hand embroidery, the little hook that threads the eye just slides between the plies of these heavy threads. With these threads I use a large eye needle normally used for Sashiko and I have also found if I run the end through a glue stick and let it dry it makes it much easier to thread with these types of threads. I also have a floor style Ott lamp with a magnifying glass attached so I can see to thread the needle. But for fine sewing threads and tiny needles the Bohin is the bomb!