Take a soda or beer can.
Cut it down the side.
Then cut along the bottom.
Do it along the top of the cut as well.
Should be in the shape of an “I”.
Open the “doors”.
Stuff in your tinder and kindling.
Light it up.
To get a nice, portable, windproof flame.
That can act as a portable stove to heat food, boil water and more!