This has got to be one of the greatest children's book ever. I saw I Want My Hat Back by Jon Klassen in the shop at the Art Gallery of NSW and ended up reading it all the way through laughing. For some reason I find it absolutely hilarious- maybe because it reminds me so much of a ridiculous internet memes. My favourite part it dawns on him he HAS seen his hat.
Very excited to see it turned into a video (though of course the book is always better ;))