I consider "On Directing Film", a book/transcript from a series of lectures he did, mandatory reading for anybody in this industry.

I actually have it sitting next to me right now with highlighter stained pages, and post-its hanging out everywhere.
My favorite paragraph being:
"The purpose of technique is to free the unconscious. If you follow the rules ploddingly, they will allow your unconscious to be free. That's true creativity. If not, you will be fettered by your conscious mind. Because the conscious mind always wants to be liked and wants to be interesting. The conscious mind is going to suggest the obvious, the cliche, because these things offer the security of having succeeded in the past. Only the mind that has been taken off itself and put on a task is allowed true creativity"

I like the Nite Ize things, but they are too expensive. This "Garden Tie" stuff works great and is super cheap...it just doesnt have the rubber ends. http://www.amazon.com/Luster-Leaf-Rapiclip-Light-839/dp/B000RUFDI2/ref=s...