Nanoblocks and Executive toy

Nanoblocks, a system of plastic building blocks similar to Lego but about half the linear dimensions. Most finished models are designed to be tiny, of a size suitable for an office desk decoration.

Japan is the country of origin for Nanoblocks (Kawada Co. Ltd.)

An executive toy is a novelty item that is usually a small mechanical gadget placed on the desk of a corporate executive or other office workers. They have no work-related function but are usually interesting to look at and entertaining.

Example of executive toy:

Newton's cradle, where a set of metal balls are suspended from above, one is pulled from the rest and kicks them, transferring the kinetic energy to the last one.