The runners need a t-shirt design! I love stuff like this, so I thought I would try to come up with something. I suppose a fanpost, as Evilfrog so intelligently suggested would be a good place to brainstorm ideas. Here are some drawings I have come up with so far. Feel free to add your own, or give suggestions or feedback, since it is a t-shirt for all (well almost all)!
Here are my two latest and favorite-est combining all your suggestions. Please continue giving suggestions!