I'm not sure how most artists get their inspiration but mine comes in odd ways. Many nights I'm lying in bed, just waiting to fall asleep and WHAM! an art project just starts forming in my head. I used to wait thinking I'd eventually just fall asleep. Now I've learned... get up, and either go down and lay it out or jot it down in a notebook.
But, somedays my art is not so free flowing. I just NEED some inspiration and that's where my inspiration board comes into play. It's really quite eclectic and even I am amazed at things I find on it. Did I really put that there? And of course the answer is "yes" because NOBODY messes with my board.