Creating new ideas

I just came across this article about Frank Warren, who started PostSecret:

It's a website that publishes secrets voluntarily revealed by people:

http://www.postsecret.com/
http://postsecretarchive.com/

According to the article, "Warren had the idea for PostSecret in a lucid dream and started it as an art project...." It has gotten to be really popular and has led to the publication of 4 books.

It made me wonder how many other people have come up with original ideas in lucid dreams. Can the state of consciousness experienced during lucid dreams be more creative than normal waking consciousness? Have you ever tried (successfully or not) to generate an idea in a lucid dream? Maybe an idea for a song, an art project, a book, an invention, a business, etc. How would one go about using lucid dreams to generate ideas? Or is it something that just has to happen on it's own and can't be forced? It might work to simply ask a dream character or the dream itself for an idea. Or you could try thinking about what you're looking for during the dream and see if any ideas occur to you. Say you're trying to get an idea for a new musical composition. You could just start humming or singing during a lucid dream and see what happens.