We made a fidget toys which is particularly designed for children, but also for adults who have attention or concentration problems. Actually, they are objects that are pleasant to touch. Their main objective is to reduce stress and calm hyperactivity.
These people are recognizable by certain gestures such as biting their nails or the end of a pen, or turning their pen in all directions.
They need to do these little things from time to time to release energy. If they don't, then they will feel stressed or embarrassed in some way.