Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Recreational Artifacts (hierarchy name)
5. recreational artifacts (equipment)
6. toys (recreational artifacts)
7. [toys by mode of operation]

Anotations

Scope note:

The toy consists of a sturdy cord with two hard plastic balls at the ends. The cord is knotted to a plastic tab. This tab is held between the thumb and forefinger, so that the balls hang side by side in equilibrium. A quick up and down motion of the wrist causes the balls above and below the wrist to tap against each other, creating a click-clack sound.