okay, you know how difficult it is to tie on a size 18 fly when your hands are freezing; I drop several flies trying to do this. So, I developed a cheep solution:
buy some retractable ball point pens from the dollar store; theyre about 25c each; remove the ink tube and replace it with another similar tube(I used an old rod tip) Insert a piece of stiff wire after making a hook in one end; glue the wire in the tube. I wound dental floss on the tube to be a stopper for the spring(glued it with epoxy) Very simple little tool but it'l hold the smallest flies so you can tie them. ( Somebody makes these commercially)edit: I should have also said you can use the existing ink cartlege by taking out the metal point and soaking it for awhile but its kinda messy.