I work in a Wildlife Reserve in the American Southwest and I decided I wanted something thematic for my office wall.
I sketched out a silhouette of an American Bison (Buffalo) then jazzed it up with a scrub tree and a little grass. It was okay but needed more, so I added a little geometric art at the bottom and an improvised sun in the sky, to give it a more Native American feel. I like how the chart turned out, and now I'm working on finishing the project, crocheted with thread.
Here is the chart: