The closest I have to a BOB is the overnight backpack and tool kit in the car. The kit includes tools for house repairs when I'm visiting. The small pry bar in it is L shaped for more leverage removing wheel covers and inner door panels.
Since I have it out, it needs the edges ground and sanded smoother and Gorilla tape padding to protect the door paint.
When I travelled on a motorcycle I kept watch for the smallest tools that would do the job. I quickly learned that crosscut wood saws were far better than a hatchet when camping, so I carried the smallest hatchet that worked with the impact driver. It's big enough to chop kindling and sharpen tent stakes, saws do the rest better anyway. I think it's this:
I couldn't find a compact handle for recip saw blades, which are longer and more useful than pocket knife saws, so I made a flat aluminum one that attaches with a screw and wingnut. The wingnut doubles as the handguard.
--jsw