It's called Thinking Putty.
The ultimate stress reduction toy is here. Of course you remember playing with putty as a kid. Thinking Putty is a stretchable, bounce able, moldable, tearable, magnetic, and all-around fascinating toy. While you do whatever you want with it, your brain relaxes and opens up to all kinds of creative thinking. You can bounce it, stretch it, and tear it -- all of which are loads of fun.
Millions of tiny micron-sized magnets are embedded in each handful of Magnetic Thinking Putty. Use the included super-strong ceramic magnet to control the putty like a snake charmer. Or "charge" the blob of putty so it can become a magnet of its own and pick up small tacks and paperclips. Like any other putty, it can be stretched, bounced, molded, popped, and torn. However, when this putty is in the presence of a magnetic field, it exhibits fascinating properties.