I found this interesting article on creativity at Time.com.
The article dates back to January 2006, but makes some wonderful points about creativity:
"... In creativity research, we refer to the three Bs—for the bathtub, the bed and the bus—places where ideas have famously and suddenly emerged. When we take time off from working on a problem, we change what we're doing and our context, and that can activate different areas of our brain. If the answer wasn't in the part of the brain we were using, it might be in another ..."
"...They have tons of ideas, many of them bad. The trick is to evaluate them and mercilessly purge the bad ones. But even bad ideas can be useful .... Sometimes you don't know which sparks are important until later, but the more ideas you have, the better ..."
"The Hidden Secrets of the Creative Mind" January 08, 2006 at Time.com