What is toy that expands and contracts?

A toy that expands and contracts is usually a type of fidget toy or stress ball that can be squeezed or manipulated in order to reduce stress and anxiety. These toys typically consist of a soft, pliable material such as rubber or foam, and they may feature various textures or shapes for added sensory feedback. When squeezed, the toy will compress and become smaller, but it will expand back to its original shape when released. Many people find these toys to be helpful for managing anxiety, improving focus, and reducing tension. They are commonly used in classrooms, offices, and other environments where individuals may benefit from a quick sensory break or calming activity.