Stress ball

In Australia, most common are the foam type, which prevents stress through resistance from squeezing the ball.

Chinese-form balls are known as the Baoding ball; unlike others, these are not squeezable as they are solid and come in pairs, allowing users to roll them together to make a soothing sound and a smooth sensation feeling in one's hands.

Some stress relievers are made from closed-cell polyurethane foam rubber.

[2] There are also mochi squishies, which are small, slightly sticky, usually shaped like cute animals or fruits/vegetables, and are made of silicone.

[citation needed] Stress balls, especially those used in physical therapy, can also contain gel of different densities inside a rubber or cloth skin.