One of the most well-known fidget toys, the hand spinner will keep your kid's hands busy and her mind relaxed. The Vivahouse Fidget Spinner ($9, originally $10) is travel-friendly, quiet, and ...

Therefore, the fidget spinner's price premium ($15 on Amazon) over other common fidget objects such as pens, pencils, balls and coins probably isn't due to massive research and development costs.

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 ...