Scott Hansen asked 25 creative folks the same question: What do you do to inspire your creativity when you find yourself in a rut? Read the answers over on Scott's blog, ISO50. Be sure to read the additional tips left by readers via comments.
I especially like Nicholas Felton's practice of alternating the tenor of his years. Odd-numbered years concentrate more on travel and personal projects. Even-numbered years focus on work and profit. Although I couldn't financially afford to rotate crops at this stage in my life, I love discovering new ways to think.