I also have a nephew that I have been providing a continuous outdoor education too. We are going out backpacking in Feb 07 in order to give him some cold weather training (hopefully it will be a cold 3 day weekend). Taping the experience sounds like a great idea just for the memories if for no other reason.
1 other thought, by taping the outing, we will be able to clearly see what equipment that we are using and thus be able to more easily see what equipment we are lugging around for no real purpose!