The diabolo has made a comeback.
Practice cool tricks in the schoolyard and show your friends your best tricks.
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From Wikipedia, the free encyclopedia:
The diabolo is a juggling or circus prop consisting of an axle and two cups (hourglass/egg timer shaped) or discs derived from the Chinese yo-yo.
This object is spun using a string attached to two hand sticks.
A large variety of tricks are possible with the diabolo, including tosses, and various types of interaction with the sticks, string, and various parts of the user's body.
Like the Western yo-yo, it maintains its spinning motion through a rotating effect based on conservation of angular momentum.