You will need:
- Water bottle.
- Dry grass.
- Bark from a thin tree.
- Green leaf.
Start a fire using a glass bottle
From a dry stick, which can be easily found not only in the forest, you need to cut off the entire bark in a circle with a knife.
Everything should be dry.
Next we need dry grass and a green leaf from a tree.
We roll the dry grass tightly into this green leaf. Cigar-type technology.
Next, we insert this “twist” into a “case” made of bark. It turned out to be a kind of thermos for warmth.
Take a bottle (by the way, a plastic one is also good) and fill it with clean water. Then, like a magnifying glass lens, we catch the sunlight, trying to focus a concentrated point of light on the dry grass. This should be done in the neck area, as it has a round shape.
And after a while the smoke will come.
All that remains is to fan the smoldering into an open flame, and this is not at all difficult.
Of course, as you already guessed, you must have sun; on a cloudy day this method will not help. But you still need to take it into service. After all, anything can happen in life.