The intelligent clay (in the US it is called Thinking Putty) can not only be deformed, but depending on the force used, it exhibits amazing properties:
It slowly flows flat if you leave it there.
It stretches endlessly like chewing gum when slowly pulled apart.
If you throw the clay on the ground or against the wall, it will bounce back like a bouncing ball.
You can pull it apart, almost like paper, if you pull quickly.
If the force is great enough, it can even become so hard that it shatters.
It is not sticky or slimy and does not stain hands!
It is odorless!
It is non-toxic!
Another big advantage: unlike other modeling clay, the intelligent clay does not dry out and therefore has an almost unlimited shelf life!
This clay has the additional property that the color changes when you play with it with warm hands. Holding a warm cup of tea or running your hands under the cold tap before playing provides extra fun.