Industrial Aluminum Foil

This is significantly thicker than anything you'll find at the grocery store.  It's more akin to sheet metal than your typical "foil" but still completely moldable for use as a cup for scooping or drinking water, a flame guard for boiling in your Emergency Reservoir™, or a windbreak for your fire.  If you don't want to cook your fish directly in the coals, you can lay this foil out flat and use it as a cooking surface too. Maybe we should have called it Survival Foil.