My son is addicted to origami. We gave him the origami calander and he was done well before the year was out. The airplane origami books also tired quickly. We have him this book about 2 months ago, and although my house is now filled with origami cubes and stars and whatnot... he is still interested in it! The down-side is that you make the same shape over and over again, but that does not seem to bother him. A few peices also do better if strengthened with tape or glue. What he loves best about this though, is using chocolate wrappers, or gum wrappers, or whatever is on hand to create a piece. Gather a dozen hersey's wrappers, and you have a lovely cube! It has been well worth the money spent!