Find Out What Your Water Bottle Can Be Used For

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Found a glass bottle? Putting a message in there and casting it into the sea is a major Hail Mary. Try these six techniques instead.

Boil water

Wet a bit of cordage (to prevent burning) and tie it around the lip of a partially filled bottle (you don’t want it to boil over and douse the flames). Suspend close enough to your fire that flames lick the bottle. Nutritious upgrade: Pop a few grubs or worms in there.

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Start a fire

Harness the sun (like with a magnifying glass) by filling the bottle with water or other clear liquid. Cork the end with your thumb and hold the bottle horizontal and close to the ground. Fiddle with the angle to concentrate sunrays onto your tinder (see left).

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Stab, cut, slice, etc.

No use crying over a broken bottle. Shards work as knife blades, spearheads, and strikers for firesteels. Just make sure to protect your hands.

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