A rivet gun with 1/8" aluminum rivets, and a cordless drill with a 1/8" drill bit are good to have. You never know when something may fly off, and be easily reattached with those items.
A small tube of Parbond is good to have also (selaing up leaks).
Other than that, pretty much normal stuff, like a level, jack, lug wrench, hammer, pliers, screwdriver, etc.
Oh, and a can of WD40 and a roll of duct tape.
There are severl threads around that will give you more info, just type "camping supplies" into the search area.