When you drink a lot of soda you end up with a bunch of bottles lying around, and since we're not post-apocalyptic scavengers, we chuck them in the recycling bin without a second thought.
But the crafty keep a few of those bottles around in their workshop, because they're great for holding little stuff like nuts and bolts but won't shatter under the weight like glass jars.
And when weapon maker extraordinaire Joerg Sprave from The Slingshot Channel saw those bottles laying around, he chose to get to crafting, Fallout style, repurposing them into barrels for an arrow shooting minigun.
-Via Memebase