My friend Karen (HI Karen R!) loves to work with felted wool that she felted herself and she has created some lovely pieces.
What she enjoys most I think, is find wool clothes in a variety of colors at thrift stores, buying them at the cheapest prices you can imagine, then takes them home, rips out the seams etc then washes/felts the wool. She has even dyed some of the whites or creams to get different colors.
I've been with her on a couple of these Thrift shop excursions and had fun with her, looking thru skirts, suits etc.
Have fun with your felting addiction
warm quilt hugs, sue in CA