I used to have some photos (lost in the hard drive crash) of a Willys CJ5 that a guy had made special brackets and mounted 2 or 3 ammo cans under the hood, inside the engine compartment. He kept hand tools, spark plugs, fuel filters, belts, stuff like that in them. Awesome idea, wish I still had the photos. But ammo cans are great for small tool kits and extra small parts. Safe containers for extra motor oil bottles, and so on.....