One of my current favorite children’s authors is Cressida Cowell; I’d say she probably tops Boo’s list, too, as he  has powered through most of the books in her “How to Train Your Dragon” series. We were pretty chuffed that she returned to Hay Festival this year.  With her typical uncontainable energy and thoughts flying off on tangents about as quickly as the words could tumble out of her mouth, she practically bounced around the stage as she talked about the importance of imagination, her sources of inspiration…and lying. Similar to her talk in 2010, she started off describing her summer holidays as a child on a remote island off…