I was making up a bedtime story for the boys tonight. They were exploring the mountains in it and got to each create two weapons out of nature around them. Michael created 'moose poop' and a 'fart gun', both technically natural; Daniel created 'a found abandon metal sword which I sharpened using rocks' and 'a hand-made spear, and by hand made mom I mean I used a wood branch that was very cylindrical, and sharpened a rock for the end of the spear, and then attached the rock tip to the cylindrical piece of wood using vines I found by wrapping the vines around both the rock and the cylinder". OK, thanks for the detailed description of your natural weapons Daniel, now onto fighting bridge trolls in the story....