First off: Give your son a world class bollicking. You NEVER EVER use your knife as a prybar. Give his instructor one as well. Mora knives are sharp not tough. And you carry it on a cord around your body not around your neck. The idea is to ensure that irrespective of what happens you stay attached to your knife. Clip your firestick to the cord as well. Best way yo get a pine resin knot out of a lump of wood is to tap it with the back end of an axe. If that ain't an option hammer it against a tree. What you use as tinder is a matter of personal choice. I happen to prefer the Survival inc Wet-Fire cubes in their individual foil packages. Open the package, shave or crush as you see fit, ignite it. Add tinder and vóla! One free tip for you: when using a firestick use the back of the saw on the Leatherman Wave and draw the firestick back against the saw not, as some people do, the saw down the stick. If you want a good demo of these things take a look at Ray Mears DVD's or read his book "Bushcraft" ISBN 0 340 79258 2 . Recommended. Shelter wise, use a decent quality poncho, a cheap one will shred in any sort of wind. Only thing they are really good for is collecting rainwater. Erect a 4 pole "X" frame, small stone tied in to each corner in the classic fashion, lash to frame , small stone in the back of the hood. Pray for rain. Best use for a garbage bag is to stuff it with leaves etc in order to insulate yourself from the ground or as a rain trap or to keep your firewood dry or.....