Shtf is different from auto break down but ill give it a shot.

My truck has a pair of jacks. A jack stand. A lug wrench and a star. A come along. 2 tow ropes. A ton of straps. Fluids. Gasket maker. Jumper cables. Compressor broke hunting a replacement. Flashlights. Funnels. Fluids. Spare belts and hoses. Boefang. Full mechanic tool set. Usually my work backpack full of tools. 2 resqme. 2 center punches. 1 knife. Winter gear. 2 inverters. Usually atleast 5 gallons of fuel. A gerber 600. A small shovel. A blow out kit in the drivers pocket booboo passenger side. Moist towlets. Gps. Maps.

I need a good test light

Get home bag. Klein journeyman dykes. Gerber 600 with multi use saw. Pocket chainsaw. Knife. Lockpicks. 6" crescent wrench