I used to go to a creative writing class in Melbourne. The best thing about it was that it forced me to write on a regular basis. The worst thing about it was some of our terrible writing!
I was recently invited to teach cartooning to a class of 25 seven to nine year olds and I went along to the school yesterday. We did a workshop on character design (specifically superheroes) and I was amazed to see how original and diverse their creations were. It was just as inspiring for me as it was for them AND I got to learn how to use one of those new-fangled whiteboards.