Here are some pictures of my efforts. I'm not so sure you can see much by the photos, but the addition of the alternative fabrics is more evident in person.
|Various cotton quilting fabrics are hooked in this part of the rug.|
|This is the same picture but from further away.|
So far my favorite alternative fabric for hooking is using my old flour sack dish towels, but even with a very strong dye solution (for cotton fabric) the towel only absorbed a mild tint of color.
I guess it's back to the dye kitchen for me!