Oh, one more thing. An ABC dry-chemical fire extinguisher makes absolutely DENSE clouds of dust that is an effective screening agent.
You can unscrew the tops when they are empty, clean them out, refill them with the chemical of your choice (say...cheyenne pepper dust) and re-pressurize them with an air compressor. Then voila' GIANT pepper spray.
I've "heard of" people also building improvised flamethrowers out of fire extinguishers. These can be effective up to 40' with the froper fuel and compression. Again, know what you're doing, or you're going to wind up a crispy critter. Improvised weaponry is no pastime for
idiots. (Or, it may be argued that those who make it a pastime are by default, idiots, depending on your point of view)
In any case, if you don't want to end up in the Darwin Awards, think before you act!