If you do much searching at all for lists of bug out bag contents, you’ll see aluminum foil mentioned frequently. Lots of people probably toss some in their kits but don’t really know why, they are just going down the list of suggested items for the BOB.
Aluminum foil is incredibly versatile and serves many purposes in a survival situation.
You can shape it into a cup for drinking or transferring water from a stream to a container. It can also be shaped into a funnel for the same purpose.
It can be used for cooking if you lack pots and pans. It is particularly great for steaming fish and veggies. Make a pouch with the foil and place inside the food with a bit of water. Fold the pouch closed tight and bury it in hot coals for a while to cook.
Crumple a bit of foil to use as a pot scrubber.
You can use a bit of foil as a fishing lure. Personally, I almost always have better luck with live bait like worms and grubs but having foil for this purpose is never a bad idea.
If you have no other way to keep found tinder dry, wrap it in foil and stick it in your pocket.
Honestly, that’s just scratching the surface. I’m sure my readers here can come up with several more uses for aluminum foil in a survival situation. Obviously, it is high time you added foil to your survival kits and now you know why.