).The first step is to get a small 12 or 16 fl. oz. plastic bottle that is DRY on the inside with a screw-on cap. Crush enough powder out of some fireworks to fill the bottle about half an inch on the bottom. Now take a sparkler and remove the wooden stick that you hold it with. Poke a hole in the lid of the bottle and put the sparkler in so that it extends down into the bottle but with enough poking out the top to give you time to run away. Screw the lid back onto the bottle and shake it so that the powder spreads and sticks to the walls.
Now, bury it so that the cap is below ground level but not covered in dirt.
Light it, and RUN!!! It will make a loud bang, so if you are in the UK, do it in the country or around guy fawkes night. In the US, the country or around July 4th.
If you have a blue/green screen, you can do this effect in front of it so that you can composite it into your production.
