You're stuck in a corner, and you run out of ammo. When in reality, your trigger finger is tired. You rapidly scroll through your countless items in the over slotted playertype. You find All Purpose Spray. Perfect! A deadly weapon that won't tire out your poor trigger finger. Too bad you get shot before using it.
This acidic spray does 40 damage per shot, and fires 3 shots of acid in a rapid burst, every 500 milliseconds! Doing quick damage to your enemy! Yet is is disguised as a white Paint Can!
Yes, I made this whole thing like an ad. I think it would be a good idea for some DM's. Mainly because you try to get as close to your enemy as possible.