Pinspiration: DIY fidget spinners
Fidget spinners are very popular right now. Many stores have reported selling out. This could be a fun activity for kids and parents.
Skateboard bearings (you can find these online or at a local sporting goods store)
Thick rubber band
Using a butter knife, remove the rubber ring protecting the ball bearings on the center bearing.
Using superglue attach bearings to both sides. Allow ample time to dry. Then secure with a thick rubber band.