Usually a tire pressure gauge, a jack, an impact, a couple of screwdrivers, a wrench for the bottle nut and a multi-tool that I keep in the console of the truck.

Everything is ready to rock when I get to the track and I avoid working on it there as much as possible! (I hate distractions and work alone 99% of the time.)

Of course, It's a slow street car so it requires nothing between rounds.

At this point, I'm usually one and done on test and tune nights. I know what change I've made and what to expect. My Virtual Dyno predicted 10.40 the other night and it ran 10.40. Time to go home.