I sketched this out over a year ago and haven't made it yet (I'm still learning how to weld aluminium).
It's a full length, fold down - fold up table along the side of the camper. Long enough, the entire length of the camper, that I think it could be a cooking and a serving table, but not an "eating at" table, unlees standing up. Not an original idea by me, I think I saw somethng like it here on WTW or over on ExPo, but, who knows, sometimes my memory fails me and instead I get something original to pop out.
The table will have some ribs in it to make it stiff and may have a backsplash (still deciding on that)
It folds flat against the side of the camper (middle drawing) and locks in place using the jack brackets (I don't drive with the jacks mounted). It uses a bracket at the front and rear of the side overhang (shown in the left drawing) to allow the table to slide in and out, with a gravity cutout in the slide slot on both ends. The outside gravity cutout is required to keep the table out and not slide in against the truck body, the inside, gravity cutout is just another secure anchor point when up.
To deploy the fold down table, unlock it from the jack brackets, lift the table up, out of the inside gravity cutout in the slide, slide it out and into the outside gravity cutout and rotate the table from vertical into the horizontal down position.
It's supported in the down position with a cable attached to the jack brackets, probably with a carabineer or some other type of secure quick release device.
I'll probably have to have some small sponge or rubber pieces that are collapsible a bit on the outside of the camper in a couple of strategetic places, when it is in the up position, to prevent movent and noise or other possible damage. Locking in the up position MUST be absolutely secure, failure to keep the table in the up position while driving is NOT an option. I'm thinking a bolt into a threaded hole for the "locking pin", however, that detail is still up in the air.
My truck (Ford Ranger 4x4) seems to be just about the right height to have the table in the down position for a good height to work on. On other trucks this may not work out as nice as on mine. The drawing above is not to scale.
I have no access doors on the driver's side on my ATC Bobcat shell (a nice smooth side, no protrusions), however, if you have those doors, this solution would require lowering the fold down table to either; 1) open the doors, or 2) if you run anything that needs venting while parked. You may need to also make some standouts, to keep the table off any protrusions you have on the side of the camper. And, if you run anything that needs venting while driving, and the table covers up the vents, this is not a good solution. Have an outside shower, maybe not a good solution either.
This could also work on the passenger side of the camper, however, in the up position it would block the window (it might provide some window protection when the trail is narrow and the branches are overgorwn).
As I said I haven't made it yet, I've only done the preliminary geometery calculations. I'd suspect that the support cable would be stowed inside the ATC Bobcat, as it would probably make a lot of noise outside while driving.
Just another idea from out of left field or maybe the peanut gallery.
the table is really wobbly. 
