Jon has a nice post on changing habits and the evolvability of organizations. As you can see from the comment I left there, this is something I do a lot. I think constantly stimulating your brain with change by breaking old habits and taking new perspectives is the best way to foster general creativity. Alcohol sometimes helps as well 
Seriously though, novelty builds new pathways in your brain, which can benefit your thinking tremendously.
Getting Creative By Changing Your Habits
