One of my favorites! I love the bookishness of the seven-day magic. The self-references are great too- Eager brings up all his other books herein. Or a lot of them. There's even some character crossover. I love how the kids in this book have such definite ideas about how the magic will and will not work. Of course, they're right. And the magical book itself is a delight. Read Edward Eager, pick any one. You can't go wrong.