The Road Runners Club of America unveiled a new universal "No Headphones" icon. Read about it in the thread here:
http://www.letsrun.com/forum/flat_read.php?thread=2370745
Here is the icon:
http://www.marathonguide.com/pressreleases/pressfiles/images/RRCANoHeadphones_080208_home.gif
As you can see, it's absolutely terrible. It's got a bunch of weird colors, and an icon like this shouldn't require words to explain what it means. I think the talented letsrun community can come up with something a lot better. I'd like to see an icon that displays somebody wearing headphones getting hit by a car, but that's just one idea. Go crazy.
Sorry, I don't have any prizes.