In the last few years I've begun to get into mobile app design. The first app, now on the market, is Avatalker AAC; a speech-communication aide for nonverbal children with autism. You can see a demonstration of Avatalker at http://www.avatalkeraac.com/support.html
The second app design, Avatalker Smart Scenes AAC, exists currently on paper as we await funding for development.
I designed the software features, screen layouts and several of the graphics assets for the software interfaces. The cartoon illustrations you see in these examples are from a symbol set designed by Norman Nanstiel, Sr.