Really nice interpretation of the theme. I completed all levels with 3 starts and this allows me to offer advice as I am clearly a pro gamer :D
I would have loved to see more items, of more weights. Items that react to eachother, or can't be stacked/are fragile. The time limit was so long it felt like it made more sense to have a limit on dropped items as part of the score, 3*s requiring no droppages, or something similar
That said though, great work, implementation was good, no major bugs, all felt good!
Well done!