JPL Solar System Ambassador. This is a great volunteer program for educational and community outreach on space exploration and astronomy themes. If you have an interest in space exploration, enjoy sharing your enthusiasm with others, and would like to learn more about space exploration yourself, this program might be just the thing for you! Although I haven't been as active recently as I was a few years ago, I've really enjoyed the outreach events I have done and the training I've received as a Solar System Ambassador. And you have to admit it's a cool title.
You can find more information and a link to the application here. The program only operates in the United States.