Like the ideas for the Chenille and yarn cards. Here one I used to use. When I lived in a condo and had limited space I used a 3 ring binder with the baseball card sleeves with in it. I could just open up the three ring binder and open it to the general color I was looking for say olive and there was my dozen or so olive colored yarns and chenniles all layed out for me to chose between.
I got away from the three ring binder idea once I had a whole bedroom to tie flies and lay out my material in but I still keep a binder with the baseball card sleeves within to fill up for trips that I plan to bring my fly tying stuff with me on.