Not only are they a lot of fun to just play with, they actually have a great purpose.
If you are like me and many others out there, you have a lot of fidget spinner fidgeting habits.
Tapping your foot, pen, bouncing, clicking, even biting nails are usually related to nervous habits.
These toys are great replacements for any of things along with others.
There has even been feedback from people with adhd that say it helps them to regain focus on concentration.