Cardboard Firetruck Fort! I created this for my nephews. I used 2 shorty wardrobe boxes from U Haul, paint (red), duct tape (silver and red) tag board (black, yellow, and red), and some velcro cable ties to make it. The cable ties are optional so it can be flattened and put away when not in use.
One of the first lessons to survival is learning how to make a fire under most any conditions. Creating a fire can make the difference between life and death in many outdoor survival situations, for this reason, it is a good skill to master.