If anyone is looking for ideas...
  1. Fortunately, the Milk, by Neil Gaiman
  2. The Yeti Files series, by Kevin Sherry
  3. The Notebook of Doom series, by Troy Cummings
  4. The I Survived series, by Lauren Tarshis
  5. The Day the Crayons Came Home, by Drew Daywalt
    Because he still loves picture books too.
  6. The Book With No Pictures, by B.J. Novak
    Because he likes me to say absurd words and laugh hysterically.
  7. The Elephant & Piggie books, and the Pigeon books, by Mo Willems