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Kids can be as inventive as the popular Disney cartoon characters, Phineas and Ferb, when they read this storybook and use the wind-up robot toy and punch out pieces to make all kinds of cool robot toys. In their popular Disney XD animated series, Phineas and Ferb, are always busy building and inventing all kinds of wild and crazy mechanical marvels! In this fun-filled book, kids can not only follow the imaginative exploits of these two boy inventors, but also share the fun of building a variety of wind-up robots just as Phineas and Ferb might do. Each book includes a wind-up robot toy base and three sheets of punch-out pieces of different heads, arms, and bodies. Kids can mix and match them to make all kinds of funny, personalized "Brobots", as Phineas and Ferb like to call 'em.