The Expand-A-Ball Sphere is a fascinating triumph of engineering and imagination. Starting off as a star shaped ball, simply pick it up by one of its many plastic points and it expands neatly into an interlaced globe structure. It can stand and keep its shape and even roll along the floor, but if touched the right way, it will instantly collapse. There are various tricks you can do with the Expand-A-Ball, if you're prepared to practice.
