What do you bring to the track with you for a day of racing?

I have a high 11 second Dart that is trailered to the track. I was loading stuff and felt like I was bringing everything and the kitchen sink. Talking to my friend and previous owner of the car , he had the opposite approach. He would bring the car, a basic set of hand tools and fuel . He felt that if anything went wrong it was just better to load up and go home and take time to fix it right rather than thrashing in the pits . He brought almost no spare parts.