Give the Scouts some equipment and ask them to use it to boil an egg
Plastic cup, water, 3 canes, sisal, trangea, egg, baking paper.
First ask tem to retrive the egg and cup from the centre of the room. They will then need to build a tripod using the cane. Something to put the water in using the baking paper and origami. Then they can hang the paper pot over the fire with the egg and water in until it boils. It will not catch on fire