I have recently stumbled upon a nymph pattern that is called the squirminator. I would post the link but it seems like I am unable to do so. A quick google search can find it for you. The fly uses a tentacle off of those rubber toys that you can get at the dollar store, a jig hook, and egg yarn. People say that it is a good attractor, but looking at the video posted on the orvis website, I thought that it could be a nice uncased caddis imitation with a few tweaks. I used an egg hook, olive dubbing, a Hungarian partridge feather, and a green tentacle for the variation. Constructive criticism is greatly appreciated, tight lines.