Don't forget the mundane stuff like bug spray, sunblock, clothing for bad weather, maybe an extra pair of sneakers in case of rain, some kind of cap. And, by all means, stash a roll or two of TP somewhere in the car. It's a great comfort not to need it, but a greater comfort to have it if you do. Maybe some antacids, altoids, foofoo juice, etc. Wash cloth, towel, etc. If you'll have access to your car, no problem packing loose, with extra stuff. BUt if you're living out of a back pack, lighten up, literally. And the all purpose utility essentials for any outing: a good pocket knife; roll of duct tape; spool of nylon twine; sheet of visqueen; and matches. MIght want to take a friend along to help tote all the essentials. :>) And most important: bring a good attitude.