I like to be prepared and self sufficient. I do a fair amount of camping and hunting, so a lot of these items are used for that, but nonetheless here is what I keep under the back seat of my pickup or in the toolbox.-Jumper Cables-Small 1st Aid Kit-Flashlights / Headlamp / Lantern-Chain & Tow Strap-Toilet Paper-Bungees, Tie Downs, Rope-Tarp-2 Gallons of Gas-Change of Clothes-Cold Weather Gear (Boots, Gloves, Caps, Balaclava, Hand Warmers)-Machete-Small Axe-Hand Saw-Hunting Knife-Binoculars-Matches & Fire Starter-Mylar Blankets-Water Bottle-GPS-$100 Cash-Tool Box:Breaker BarBottle JackRatchet & SocketsHammerScrewdriversVise GripUtility KnifeCrescent WrenchChannel LockHex SetValve Stem ToolTire Plug KitFunnelWD-40Zip TiesHose ClampsWire CutterWire NutsWireElectrical TapeSpare FusesRagsDuct TapeMeasuring Tape