I found this yucca seed pod hiking with my daughter and SIL. It just looked interesting and when I researched if was part of the succulent family. I sketched it with sepia ink and a bit of watercolor because it is so close to the real color.
I used a Stillman and Birn beta series sketchbook. The paper is 180# and it is gorgeous to sketch on and does take watercolor beautifully as well.