(not a very good picture but it is hard to time the shutter to the explosion)
The fun thing about recycling is the used starting fluid cans. Cans of spray paint which no longer spray are also a lot of fun. We sat the cans on a board over the fire and then when the caps started to melt, shot them with the .22's. We had a regular firing line. The key is to shoot them when they are just about to explode on their own.
Several very satisfying explosions were experienced. There is nothing like a good ball of fire on a wet and cold Saturday, right before you have to attend another funeral.
(Note: That is NOT my Chevy pickup shown in the photo)