Wish I could get pictures of my buddy's setup he has in his truck, he built something similar to a sub type carpeted box that fits on top of the hump on the floor, it is contoured to the 4wd shifter... It houses 2 2 plug wall outlets (one on each side), oversized cup holders, and mounting for both his ham and CB units. It also has 4 upfitter type switches on it as well, which I dont think he has wired into anything at the moment...
Underneath the custom console is the 1000 watt (IIRC) inverter, that is wired directly to the battery. I am pretty sure he has it wired so its only on when he has his ignition key turned to on or accessory.
It is a neat setup which I want to build for my truck as well, though I have not found time to do so...