If this has been suggested already my apologies...So, when reading IN FISHING Magazine the other day under new products, I see a line threader sold by a company the magazine says, for $3.99. Went on their website and says $6.99 & shipping. I got to thinking...
Get an old pen, take out the "guts" part; (he old .19 cent BIC comes to mind). Cut a piece of the empty ink tube about 2" long, then cut a 1/4" slice thru one side of one end with a razor and mark the "slice" with a Sharpie. Slide line thru tube & pull tag into the Sharpie marked slice, and you can thread rod in record time, no misses or line falling back thru the guides.