Here's a weighted fly that is one of my more successful creations. The top is a fake fingernail. "Electric" finish is two coats of fingernail polish: Black creme + clear holographic flake.
Body is made from clear fuzzy yarn with multi-colored tinsel. (wal-mart) It looks light purple when wet.
Tail is just a couple of black marabou clumps.
I've caught trout, smallmouth bass, and yellow perch with it. What do you think? Got any suggestions?