I had read both of these books when I was a child so bare with me on the details.
1. There was a book where a bunny of some sort, or a child in a pair of bunny pajamas sneaks out on an adventure while his grandmother is watching television. No I don't mean the wild things either.
2. I can really only describe the cover. It was mainly blue with a boy sitting in a bathtub and all long the cover was random pictures of people and things he did through out his adventure.
I hope someone can help me with this :D