We've just got back from a road trip around Europe before which I spent two weeks building a rear cooking and storage unit with top lockers. It worked really well apart from a couple of design improvements.
We wanted to retain the flexibility of 8 seats so this conversion can be left in situ with all seats in place or removed by undoing 6 bolts. The top lockers remain in place. I have yet to make the doors for the top lockers and we had a couple of instances of raining gadgets when I took roundabouts too quickly.
https://picasaweb.google.com/lh/photo/3 ... directlink
The slide out drawer contains a shallow drainer in leu of a sink with a folding tap connected to the small water tank and a smev twin burner hob, the gas cylinder is hidden behind the black bag in the left which contains a bucket BBQ. There's also a cutlery drawer under the drainer.
Above that is the Waeco compressor fridge attached to some heavy duty sliding rails...
https://picasaweb.google.com/lh/photo/m ... directlink
There is also another drawer which we used to store some food...
https://picasaweb.google.com/lh/photo/e ... directlink
There are some cubby holes for storing things like tent pegs, mallet, hook-up cable etc and two deep drawers for pots, pans, kettle etc.
Inside there's a table with folding legs (which also connects to the rear drawer to make an external table) and some top lockers on the side and rear.
https://picasaweb.google.com/lh/photo/O ... directlink
The lockers have LED strip lights on the underside.
It was our first real camping trip and we spent 2.5 weeks in Europe staying in 3 campsites and covering nearly 3000 miles, the Bongo was faultless.
Next up is cupboard doors for the top lockers and more storage lockers above the gas cylinder and water tank.
Hope the links work!
Rich.