Fidget spinners are genuinely useful though---arguably even more useful than the other items on the list, for their ADHD/anxiety-reducing properties plus portability.
The only way you can do noticeably better is direct, hands-free brain stimulation. The fidget cube is also such an object, but it is MUCH more complex and hence vulnerable to be put down due to a competing distraction.
The only way you can do noticeably better is direct, hands-free brain stimulation. The fidget cube is also such an object, but it is MUCH more complex and hence vulnerable to be put down due to a competing distraction.