Had a laugh! :)
Great and straightforward concept and good execution, this could also make turn into a great mobile game too. Once thing I noticed is that sometimes newly spawned items already overlap existing ones and cause trouble, but there a lot of ways to fix that.
If you plan to add anything later, it would be awesome if the player could shake the container a little bit, so stuff inside would “compress” a little (at the risk of big items on top flying out).