Fidget spinners vary in price from $7 for the least expensive plastic to more than $40 for anodized aluminum with all metal parts and bearings. Like the trends that preceded it, according to Jewell, the fidget spinner uses the same bearings as a trick yo-yo or a skateboard.

Occupational therapist Tera Robinson has seen fidget spinners help kids to concentrate in the classroom. She explains why and how they can be helpful. Fidgets in the Classroom: Why? What? How? We are right in the middle of the fidget spinner craze!

What are fidget spinners? Fidget spinners started gaining popularity in March this year, and can be bought anywhere from pasar malams to department stores. Before fidget spinners, a device known as a fidget cube had gained popularity on Kickstarter sites.