Very interesting take on the theme. And I am actually amazed on the variety of stuff you managed to put into the game, so many different items and enemies! The art and overall mood of the game are also very well done.
Gameplaywise I think it would be cool to see what difference each item can make. For example, if I found an axe and one of my heroes has a sword, I would like to know if giving them the axe has any benefits. Maybe it has more damage, or bigger radius of attack, or faster attack, etc. Maybe some sort of icons on top of each hero could show that info.
P.S. I think I found a bug where I could just dupe the items infinitely xD For some reason the item did not disappear after I picked it up, but I still was able to throw it for my heroes.