Under Flatbed Toolbox Ideas?
 

Greetings folks, and happy new year.

I've got the ginormous along-the-side toolbox which is very handy, but
I'm looking to free up some bed space and hopefully trim some weight.

I've clamped 50 cal ammo cans in place as a mockup and for experimenting, but just can't find a place where they actually fit and are able to be opened with any degree of sanity. Adding in wanting to be able to open them relatively easily in snow/mud/whatever, and they become completely unworkable.

We have a smart group here, any other ideas? Pics are of the box as currently in place, and some others of the space I have to work with.