- Oreos -- you had a bag lying around and reached for one as you clicked this post, let's not kid ourselves
- Ball bearing ring -- for the center; you can get the standard 608 ones for a few dollars on Amazon
- Super glue -- or epoxy or some other tough adhesive
Per the video, glue the Oreo cookies to the sides of the ring at 120˚ intervals along its side. Wait for the glue to dry, then place your thumb and middle finger around the cookies and on the center of ring, and spin and fidget to your heart's delight.
Go ahead and make one for an afternoon snack. You can fidget all the way through any work you have to get done before rewarding yourself with a cookie every half hour or so: two stress relievers spun into one. When the three cookies are nothing but glue-y stubs, clean them and the glue off to fidget and munch another day.
The Oreo one is the easiest and tastiest, but Addyology's also offered some other DIY spinner tutorials below. Try not to hurt yourself.