Magnetic Sand Timer

Forget timing your tea. This magnetic sand timer runs for about 25 seconds, and its best trick is what happens at the bottom. Instead of sand, iron filings fall through the glass and gather above a magnet in the iron base. The pile builds into a spiky hemisphere. It’s a tiny desk spectacle with a little physics doing the heavy lifting.

At 6 inches tall and 2.25 inches across, the hourglass makes sense on a desk where you want a brief distraction between tasks. Flip it, watch the filings stack into unlikely shapes, repeat. A small gift for the person whose desk accessories tend to turn into impromptu science demonstrations.

The short run time makes this more desktop diversion than useful timer. Get it for the magnetic formations, not for keeping a meeting, workout, or cooking project on schedule.