Hand spinner is increasing focus & concentration and also effective for deep thought.
Great For Anxiety, Focusing, ADHD, Autism, Quitting Bad Habits, Staying Awake.
EDC Fidget Hand Spinner Gadget Tri-Spinner Finger Focus Reduce Stress Gadget 5 Colors Availible. It can help people quit smoking, ADHD, obsessive-compulsive disorder, anxiety, post-traumatic stress disorder, insomnia or meditation.