Depends on what I getting but as a min, multidriver screw driver, vice grips, my pocket leatherman(always have it, knife, pliers.....), large flat blade screw driver, and a socket set, possibly an adjustable wrench. Plus any special tools that I know I'll need to get a particular part. If I go alone I'll often leave the tools in the car, scout things out, figure which rig has what I want and tehn go back for the tools. Cuts down on the wandering around time pushing a wheel barrow full of tools.