Creating a monster with a purple crayon.

Sometimes you can judge how good a book is by how much trouble it gets you into. Harold and the Purple Crayon is a very imaginative book about a boy who goes on an adventure through the drawings of his purple crayon. He creates a moon, an ocean, and even a monster. As a child, I thought this was great. I even got my own purple crayon out of my medium sized box of crayolas (my parents never got me the big box) and tried to draw my own adventure. I wasn't able to create a moon or an ocean, but my mother did become quite a monster when she saw that I had drawn all over her walls.
This is definitely the best book of the series. Some of the earlier sequels aren't bad, but the idea has really become too drawn out.