Should you ever get lost in the wilderness or lose your camping gear on the way, this is the perfect replacement. Heat insulation of birch bark is reasonably, meaning, you can’t put it on the fire to cook, but you won’t burn your fingers when you eat hot soup from it. It is washable or 100% biodegradable and looks nice or at least “interesting”, right? Admitted, you would have to peel it from the birch tree first and then form it into a perfect bowl, but with some practice…