Pictures often steal the show when it comes to visual thinking. But words are important, too. Images that contain both words and pictures are more far more memorable because they both reinforce each other - it's repetition without being monotonous. And teaming the two clears up ambiguity, too. So not only is the message more memorable, it's more accurate.

Another "waiting in the airport" doodle above, started in San Francisco and finished in Palm Springs.