This year, in addition to having the booth, I'll be giving a class in Natural Dyeing on Sunday, March 27 (also in Prineville). If you will be in the area, it would be fun! Here's a copy of the flyer - click for big.
One of the cool things I'm going to do is have everyone bring a skein of yarn from their own animals (or stash). We'll dye them, too, and everyone will get a sample of the different skeins. Not all fibers take dye the same, and this will be a good way to demonstrate that (not to mention "test drive" your own fiber!).