As AJ already knows I carry my complete kit of dewalt power tools when I hit the trails. But that's not good enough if you have no way to charge the batteries. Installing at least a basic inverter is a good idea for all sorts of stuff. When I finish the wiring I will install a second more powerful inverter in the back somewhere maybe a 2000 watt one. On my fairy tale wish list is a water tank with a pump. Also on board air would be handy as well. These are things you can just carry with you and hook up they don't need to be installed so I think they count as a packing list.