Day two's picture book is...
The local bridge troll sees a shiny red tractor from his spot under the bridge. Now he is no longer a bridge troll, he is a tractor troll. And nobody on the farm is safe.
This idea came from a conversation with fellow Picture Book Marathoner Jed Henry--you can see his daily book ideas here. He said he was using a list of nouns to help him come up with ideas. He gave me the example, "...tree, tractor, troll..." as a list of nouns. Tractor Troll was born!