I routinely clean my trackball mouse but this time something else came to mind also: Baoding balls.
A small excerpt from Wikipedia about Baoding Balls:
Baoding balls, also called Chinese exercise balls, Chinese meditation balls, and Chinese medicine balls, are thought to have been created in Baoding, China, during the Ming dynasty. Baoding balls are a tool for injury recovery or as an exercise tool to improve manual dexterity and strength. They consist of two or more balls which are rotated to orbit in the hand. The iron-ball system is the greatest of Baoding prefecture’s “three treasures.” Long throughout history, renowned within China and other countries, this is Baoding prefecture’s traditional product. This item of Buddhist martial arts was first produced in the Northern Song Dynasty.
So imagine the mouse initially like this:
Then ready to be cleaned:
But suddenly, the Baoding Balls sitting on the shelf catch my attention:
So you can imagine what I did next:
Oh btw, Baoding balls produce a nice sound when you juggle them in your hands:
But I doubt you can use this mouse at work since it will produce lots of melody! 😉