There are plenty of nerdy, science-based desk baubles for you to populate your workspace with to distract you when you're sick of staring into Excel spreadsheets and need a break, but few are as cool as this one.
Essentially, you get some magnets and a thin piece of sheet metal, and you can arrange them to hover indefinitely over the surface of your desk. It takes some finagling, but it's way cooler than having those balls that just knock into each other. That's weak. Floating magnets are the desk toy of the 21st century.