A bit late, since this is already Friday, but ...
How about cooking with hot rocks? A handful of golf ball sized granite rocks can be heated up in an oven or in a pan on a small stove. Then have a couple wood bowls with water and whatever else in them. Then drop a clean hot rock in to show how it transfers its heat to the food you want to cook. Or use a hot rock to heat up a cup of coffee.
If you have a big enough flat rock, set it on your "stove" to heat up, and then fry an egg on it.
This can also the expand to simple bent stick tongs for picking up the rocks, and cooking/boiling things when you don't have a metal or ceramic pan/pot to put over your "fire". You could even soft or hard boil an egg in a paper sack full of water - without having that sack be over a fire --- a twist on that old boy scout trick.
Another possibility? How to use a blanket to sleep in or wrap up in. Like lying down across it diagonally, then folding the bottom "corner" up over your feet and the two side "corners" up over you - giving you 2 to 3 layers of blanket over you for warmth.
Or wearing that blanket like a cloak, body wrap, shawl, or poncho. Holding it in place with "found" pins.
Making an improvised cot or stretcher out of a blanket. Lay it out flat. Lay two long poles on it about 1/3 in from each side. Then lap both outside part up and over those poles. If those poles are resting on a log or some rocks on each end, you now have a "cot" to keep you up off of the ground. And your weight will hold the blanket in place. Or the weight of the person lying upon it will hold it in place as you use it as a stretcher to carry them out. You can do the same thing with two ropes tied between trees if they are far enough apart. This was often done to make a quick cradle for babies.
Just some thoughts to share.
Mikey - that grumpy ol' German blacksmith out in the Hinterlands
