Your mom sent you to school with $20 — it's the Scholastic Book Fair. Your elementary school cafeteria has been transformed into an array of colorful books and wacky gizmos. You can buy anything you want, but be careful: Go over $20 and mom is gonna be mad! You'll get to choose from a selection of fiction books, nonfiction/novelty books, and gizmos/toys. Oh, and mom's going to take back any money you don't spend, so really try and get close to that $20 limit (without going over).