2 of 3 for one of the Industrial Design of the Week challenges on conceptart.org (enjoying these, even if it's not as though I haven't been self-motivated anyways lately).
Again, highly inventive; just felt like drawing a fire extinguisher.
(And don't ask me why they're explosive, either).
(Just felt like saying that
most modern fire extinguishers have compressed CO2
when the tank ruptures it gives the gas an opportunity to force itself out all at once.