Anyone who has ever had a cat knows that if you put a super, small, tiny, container on the ground that a cat will try and fit into it.
I have no idea why cats do this but often it results in funny situations.
My husband once collected a bunch of beer can boxes and duct taped them together to make a maze for our cats.
They loved it and could often be found hiding inside it.
Take a look at some other cats who got themselves inside some things, and, well…STUCK. Although I do think a few of them had a little bit of help.