1) MOST IMPORTANT, aside from the camera: Music. Nothing gets things flowing better.
2) Positive Attitude
You can always buy better lights, a more expensive camera and a good retoucher. None of them beats those 3, for me. Music is number 1...I can always get my hands on a camera but good music is worth it's weight in gold. I keep about 10GB worth in my iTunes catalogue.
iTunes and a good set of speakers is your friend....don't forget the camera though.