Reminds me of Unpacking!
This one took me a little while to understand what to do, but then I worked it out. Made it to level 3 but didn't make much progress there. I think giving the player a little more time on each level would have helped? I wasted my first few goes having no idea what to do then the time ran out. I did get quicker when I realised I could throw (RMB) lighter items a long way.
Maybe a tutorial would help new players? And a full screen button please. :)
Lots of content for a gamejam, congrats!