Just how do you "think out of the box"?  How can you get creative? These are some of my favorite resources for that:

Creativity

• A Kick In The Seat Of The Pants - Using Your Explorer, Artist, Judge, & Warrior To Be More Creative by Roger von Oech Ph.D.
• A Whack On The Side Of The Head - How To Unlock Your Mind For Innovation by Roger von Oech, Ph.D.