A solar lighter uses a parabolic mirror to ignite a flame.
It works by concentrating a large area of the sun’s radiant energy into a focal point where the metal holder is positioned.
On a sunny day it can easily produce glowing embers in paper in a matter of seconds. With some careful blowing and perhaps some tinder, a fire is easily achievable.
In addition to not requiring additional fuel or igniter to produce fire, the solar lighter has the added benefit of being able to work after being wet, unlike most matches.
Only use under adult supervision. Use with caution and always have a plan for extinguishing a fire before starting one.