Nice collection.
I do not have everything out of my cargobox here, but will sometime to get some good pics of it all.
Mainly lots of handtools, sockets, and a good impact wrench and lot of other stuff that can come in handy.
I too was a boyscout, I like to be prepared.
Have added two fire extinguishers since the above photo was taken.
One of the fire bottles is perfectly safe for electrical wiring and the rig, the other fire bottle is not, it will leave a mess, and is best for outside of the rig and not the rig itself.
And ya gotta have ice cream on runs right?
So I carry a fridge/freezer with me too.