Kids love stories about objects that act like people. A best-selling picture book by Sherri Rinker is titled GOODNIGHT, GOODNIGHT CONSTRUCTION SITE. The big trucks one finds on a construction site stop work at night and go to sleep. As the sun sets each big machine says goodnight in rhyme. This includes a cement mixer, a crane, a bulldozer, and a dump truck. To quote from the book: "These big, big trucks, so tough and loud, They work so hard, so rough, and proud. Tomorrow is another day, Another chance to work and play." The crane truck even "tucks himself in nice and tight (sigh!), Then cuddles up and says goodnight." It might seem ludicrous for these huge machines to act as though they are tucked in bed or cuddling up to perhaps a stuffed animal, but it is apparently not ludicrous to small children.