Desktop Liquid Motion Toy

A liquid-filled hourglass with a pair of bobbing dolphins or ducks inside — flip it and one slowly rises as the other sinks.

It takes its time, which is the appeal. The movement is slow enough to genuinely hold attention, and the jewel-shaped ends make it look more like an ornament than a toy — so it can sit on a desk without announcing itself.

Supplied as an assortment of designs.