This is a great thread with lots of interesting ideas so far! The speaker box is especially impressive. Looking
The cases with the drawers where the lids are tables? I'd love a set of thoseI'm at the SEMA Show in Las Vegas this week, here's an ammo can idea I saw today. Interesting idea, but perhaps not so great execution, the grid the can is attached to is attached to the Jeep with zip ties, and there's a lot of movement. The can is empty, I'm not sure how it would hold up with some heavy gear in it. But nice idea.
Also on top of the rack there are two military surplus medical cases. Nice.
The cases with the drawers where the lids are tables? I'd love a set of those