I have a couple more ideas for you, Crisi. In this part of the country anyway people in the past have put hay into barns that was not cured/dried enough, and spontaneous combustion has caused the hay to heat until it burst into flames and burned barns and hay. When my older brother worked on a large ranch in Montana in the 1950s he said that their outside hay stacks would be heated from that, and as soon as they opened those hay stacks, like pulling bales or pitching some of the hay, it would immediately burst into flames. It wasn't a problem for them because they knew it was going to happen, and they were prepared for that. Where I worked for a number of years at the sawmill they stored a lot of sawdust outside, and often that saw dust would catch fire for the same reason. If you could take pictures of those kinds of things and then caption or label them a potential fire starters that might work.
Also in this part of the country space heaters for construction jobs in the fall, winter, or spring, can be dangerous as there is a lot of fire belching out from the propane heaters. Anyone who washes car, motorcycle, or truck parts with gasoline, which we always did, risks a possible fire, because all it takes is a spark, and you have a fire, and with gasoline it could be an explosion.
One time when I was 24 years old, I poured a little bit of gasoline onto leaves I was burning. The fire followed the gasoline fumes right up to the mouth of the gasoline can, and was burning in the mouth of the gasoline can, and that scared me to death, and I felt very lucky, and I was protected from the Lord from anything really bad happening.
Using too high wattage of bulbs in a heat lamp, which I am doing right now, but please don't tell anyone, and actually that could start a fire. It is too hot all the time for the heat lamp that I have the bulb screwed into, and the bulbs burn out often because I need a better heat lamp shield, or a lower wattage bulb.
When starting a fire in a wood cook stove or wood heating stove it is always importnat to exercise caution, and never allow your clothing to be over an open flame. My brother has filled gasoline tanks with water and then welded them, but that is even dangerous from what I understand. Many times we do take some risks, but it is important to be as carefull as possible.
Vehicles without proper exhaust systems can be dangerous for starting grass or forest fires.