I have a Logo that I've been playing around with, but it's just an idea, so don't feel obligated to stick with it. I was trying to have a rider doing a wheelie, with a front tire made of light (or a TrickSpoke design). One version uses a mountain/BMX bike and the other uses a cruiser. With both, I don't like the way the rider looks -- kind of amateur (because I am, technically. That's where 99 Designs comes in).
I've attached a few example photos of an actual TrickSpoke in action during testing.
Visit facebook.com/trickspoke or trickspoke.com to see what I've got going on.
Also, consider also the phrase "What do your WHEELS say" as a subtitle.
I have uploaded an image of the device (called Trickspoke assembly.jpg). The sticker will go on the battery case. I'm planning on printing the same graphic 2 times, so it shows up on each side. The diameter of the battery case is 0.5", so that's why I want the graphic to be about 0.7" tall.