Im no traditionalist and will tye using all different materials as I enjoy creating and experimenting. Examples : Fur, feather, foam, mateial off soft toys, plastics, etc, etc. The list goes on and on. I look at everything with a new perspective since I started fly tying years ago 
I think DaveMac had a good point with âmaterial collectingâ. That certainly described me the first several years. At first it was quite broad. Acquiring a little of everything in common or basic colors at first, then expanding the colors and adding more obscure materials. I donât think Iâm alone in saying I have packages of some materials that have never been used. Now I buy stuff thatâs new that âmightâ be useful, or new items just to tie a specific pattern. For some of us, collection materials could be be considered hoarding. Glad Iâm not one of those types!