The artwork is fantastic. The opening splash is what brought me here for sure. I like the background and parallax effect. The music is charming and relaxing.
What I struggled with was the controls. Could you have made the "throwing the box in the air" a little shorter so it could be caught in less time? In general, I wanted the putting the box on your head feeling to be snappier and more responsive. When I was moving, it kept falling off my head. If that was your attempt at portraying "controlled chaos," I get it, but it made for frustrating controls. I wonder if you could eventually have built in a telegraph for how far the character would throw the box. It might have made the puzzles too easy, and I felt like I already had a good sense of how far it would go, but the few times I missed and had to struggle back to the throwing point were more frustrating than fun.
Overall, I like what you've put together and love to see new mechanics in a 2D platformer world.