Yo-yo
A yo-yo was an Earth toy consisting of a flattened spool wound with string that was spun down from and reeled up to the hand by motions of the wrist.

Tom Paris was responsible for making the yo-yo a temporary "ship-wide craze" aboard  sometime prior to the crew's encounter with the Think Tank in 2375. At that time, sheer lunacy was the latest craze – also thanks to Paris. ()

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de:Jo-jo
Recreation