Tell us about yourself!
I thought this was a pretty neat hack at first, but did some searching and found a similar hack elsewhere. It comes with a strong warning that putting pressure in these cans that have now been compromised can cause them to rupture. These cans are not really up to holding much pressure. They depend on chemicals that are liquid at relatively high temperatures. When the trigger is pressed, some of the liquid turns to gas which escapes through the nozzle. Be very careful, as if yours does rupture, pieces of metal will go flying.
Classic Atmel ATtiny85-20PU Stop Light
Mini Table Saw