It isn't just young kids getting in on the fidget spinner craze. Four students at the University of Texas at Dallas have built what they say is the world's largest version of the toy. Theirs is 150 ...

You’ve seen fidget spinners, although you probably hadn’t just a year ago. You woke up one recent day, backpack stuffed with pogs, only to walk outside and see that the times have passed you by again.

As demand for the whirling contraptions continues to spiral, companies scrambling to keep them on shelves claim they’re being hit with extortionary practices at the overseas factories that make them.

The toy craze that has swept the nation — cheaply manufactured fidget spinners of dubious metallic constitution — is probably on the way out, with the high-water mark of fidget obsession appearing to ...