I decided to take part in the This American Life t-shirt Design competition. I made a total of three designs. I'll only show one.
The phonogram as my main inspiration. I use one in each of my designs. They are a bit of challenge to draw. I must admit, it took me several tries before I could reproduce one on paper. None the less, they are very beautiful. I must acquire one someday.
For anyone who is interested in the contest, the deadline is next monday. Information here -> http://www.thislife.org/About_Contest.aspx