Horatio Happened by Chris Riddell
Jack hates tidying up and shoves everything under the bed where, unbeknownest to him, it all fizzles and sizzles and creates a wonderful creature called Horatio. Horatio is a natural leader and gathers all the lost and lonely creatures of the room under the bed - where they create their own world - with rivers, and cities and a place for everyone. But what will happen to Horatio once Jack's mother discovers what is under the bed?