I guess it wouldn't help if I told you that any material can be felted into a piece for texture and interest.
You can incorporate, feathers, hair, fur, grasses, tinsel, synthetics, yarns, fabrics, dryer lint (if the fiber is long enough), write your name with a thread, and the list keeps on going. I have yet to exploit the art form and I keep coming up with ideas.
I have incorporated beads and pendants in my work as well and all I had to do was make a few stabs to anchor the items in the body of the piece. Can you imagine a doll covered in milagro and stamped findings, highlighted with lampwork beads or similar?
Yeah, it's a lot of fun.