Oh that reminds me of something I learned once: you can blow a room (or shack I guess) up with just a candle, a bullet, a bag of flour, and a cigarette. And I guess a lighter or some matches.

Okay, first you light the candle and put it on the floor.

Then you open up the bullet and pour the gunpowder out. So I guess you need a knife or something too.

Then you pile most of it up and put the bag of flour on it, but make enough of a powder trail to peek out.

Then you use the cigarette as a timer, set it up somehow propped so when enough of it burns to ash the cherry falls into the exposed powder

Then leave.

The cigarette burns down and falls into the powder

The powder ignites and sets off the charge piled under the bag

The bag blows up and a cloud of flour fills the air

The cloud settles, touches the candle flame, ignites, and explodes