personnaly I am interesetd in the idea that everything can be use as a weapon.
Right. In

, one could even throw rocks - as weapons !
To go a little but further : Even vils/phiols/potion/flask containing stuff should be useable as weapons - or, in other words, art least have some kind of damage value attached to them ...
So, if you fill a flask with some stuff ... let's say acid - then it could perhaps explode and do some acidic damage, too ?
... Not to speak of flasks filled with fire ... but how could the fire get into these flasks ? I have no idea ...
And if it is filled with alcohol or with dust/mist : Could it distort the enemy's Perception then, too ?