For over three years I have been designing t-shirts, some of my designs have sold hundred of copies. So I consider my t-shirt designs to be part of my portfolio. They can be viewed in their entirety here: http://www.redbubble.com/people/lukeshirt/
Hi, I'm a computer science PhD ([login to view URL]) who is looking for projects that might give me business ideas. If your projects sounds like it fits this criteria I'd be happy to code it cheaply in exchange for a discussion about your business!