This adventure can be the culmination of all the skills and activities you have worked on through the summer. Find a friendly place to camp, and pick a weekend with agreeable weather. While you're out there, go fishing, look for wild edible plants, practice some archery, and bring a few of the foods that the kids have dried for storage. And don't be shy about adding new skills. Build a cool shelter to sleep in, make some stone tools, set up a campfire spot, let the kids start the fire, and do some primitive cooking while you're out there. Don't go too "Rambo" on the kids. This trip should be fun, light hearted, and only slightly uncomfortable. If it's too brutal, they won't want to do it again. With any luck, this could become an annual family adventure.