I recently came into possession of a white ball of wool yarn, and I thought to myself, "Huh, how boring!" So I decided I would try my own attempt at dying yarn. I've never dyed yarn before so I started to do a lot of internet research, and what I found included a lot of crazy toxic dyes, all of which weren't readily available to me. But then I stumbled across this site: http://www.pioneerthinking.com/naturaldyes.html
It lists a bunch of natural ingredients and what colors they make. For the first time I was starting to think that this will be doable.
What you'll need:
A ball of white wool yarn