Starting a fire is an essential survival skill. If you have access to water and a bit of plastic wrap (or perhaps a clear plastic bag), with a little patience you can create a spark.
Grant Thompson (a.k.a. “The King of Random“) met up with Veritasium host Derek Muller to show him how to start a fire with a sandwich bag, water, tinder, and a little sunlight.
This works just like using a magnifying glass (or a clear jar) to start a fire by focusing a beam of light onto some burnable object.