Excellent take on the theme, and I really like the picel art style you made! The core gameplay felt really good, and an impressive amount of levels for a jam game. There was just one thing that felt frustrating in the game and it was the item physics, which made the penultimate level a bit irritating when the cube felt over and over of the moving platform. But that's overall the only real default that the game had to me, the rest is, overall, excellent. A little improvment I would think of too would be to pick up item with Q instead of taking those as we step on it to avoid taking it back by mistake.
Surely one of the most solid entry of the jam, well done!