The product she bought was GUM ease. It is a threader for your floss to clean between dentures or braces. Here is a picture of what they may look like.
This is fantastic, I think, since I always have trouble getting my thread through my beads. I have not tried it yet but will definitely be purchasing some in the very near future. For now this is what I also found useful is Beadalon. This is just regular beading wire used for jewelry making. I cut off about 6" piece and crease it in half. Then open it back up and slip in my thread between the two pieces and start threading on my beads.
I got mine at my local Walmart and it is inexpensive and now has multiple uses. I keep it with all my other needles in my magnetic needle case also from Walmart. (Are you noticing the theme here) Here is a picture of what I have.
Give these two ideas a try and let me know how it goes. Do you prefer one over the other or do both serve equally as well? Until next time. Have a wonderful day.