I carry lots of things with me everywhere I go! In the trunk I have my entire toolbox of sockets and box wrenches, and hand tools. My carb tuning kit with springs, jets and rods. I have a small case with a laser temp gun, multimeter, extra wire, fuses, bulbs, wire connectors, and heat shrink. I carry a couple extra spark plugs and wires and a distributor cap, a gas can, jumper cables, funnels, a small tire inflation compressor, a pneumatic jack, a few cleaning products, spray lubricants and paper towels, and nitril gloves. Also an extra battery, bottles of extra oil, atf, and coolant. In sure I'm overlooking a couple things buuuuuut, Yes, I was in Boy Scouts as a kid! "always be prepared"!