From their website at www.ravenshook.com:

Hats, blankets, amigurumi, socks? We carry a variety of acrylic, cotton, wool, and silk yarn for every project. Along with hooks, needles, and all kinds of accessories. We also carry embroidery thread, latch hook, and sewing supplies.

I bought/ invested in Raven Frog Fiber yarn in yummy colors and quviut roving. Quviut comes from the fine undercoat of the muskox. Expensive? Yes, very! But it will motivate me to keep practicing with my drop spindles on less expensive roving until I get much, much better at it.