Jack Kent illustrated lots of books, but my favourite is his retelling of the Danish folk tale The Fat Cat. I have never read it to a class that haven't been riveted. They love the concept and gaze in amazement as the cat keeps eating more and more and looks more and more balloon-like. The names Skohottentot and Skolinkenlot are fun and the repeated refrain gets them joining in. The library's copy is tatty because it is well-loved!