I've become infamous for this at local meets

- hydro jack
- 2 jack stands
- full standard and metric socket set w/ husky flex socket wrench
- 20" extension
- breaker bar (always kept next to driver seat)
- torque wrench
- wheel lock
- electric tape
- head lamp
- tire pressure gauge (nice one)
- full spare (stocker in winter and 19" penta in summer)
- assortment of polishes, waxes, and sealants
- PC DA polisher
- extension cord
- assortment of microfiber towels
- leather cleaner and conditioner
- spare cases of motor oil
- pocket screwdriver
- box cutter
- a few books for the road

I dont really have a set garage so I must carry one in my trunk. no worries, I have devised this system so that there is minimum clutter