Here's more pics of the VMI all aluminum "Xtender" trailer. I've look at it a lot because they are next to me in the vendor area.
It's made in Bellingham, WA:
http://www.vmioffroad.com
Tool box and jerry can storage on the front.
Lots of stuff on the side:
Marine grade cabinet door with electrical center inside. Shore power inlets: 1 for the battery charging system, the other to power the fridge. It also has battery jumper posts inside a little clear Pelican style case.