All you need is a piece of wood and a knife to make string from plastic cooldrink bottles.
It’s unclear how humans will fare over the next few hundred years. As the climate shifts and we may experience shortages of essential resources like food and water. That’s to say nothing of nuclear war or alien invasion. But even if the end of the world as we know it is coming, there will certainly be no shortage of plastic bottles. And if you know what you are doing, no shortage of strong string.
The process of making string from plastic cooldrink bottles, as demonstrated by YouTuber Grant Thompson, is simple if you know what you’re doing—cut a small block of wood and stick a knife in it to make a blade that you can feed a bottle into. The blade, positioned at the correct angle, cuts a thin strip of bottle. You can then just pull on the bottle to turn the rest of it into string.
This could be useful for all kinds of necessities in the future, but we like to imagine knitting this string into some cool post-apocalyptic clothing. It’ll be like Waterworld, but with plastic.
This article was originally written for and published by Popular Mechanics USA.