I had a chance to try this out in the office of the Assistant Lower School Head. This executive toy called Kinetic Sand is made by Brookstone, and this is how it is described on its website:
"Introducing SAND, the packable, stretchable—and just incredible—stuff you’ll simply never put down.
Unlike beach or play sand, SAND has special properties that make it soft and stretchy. Build something big, something small, let it flow through your fingers. You’ll be fascinated as it oozes, moves, and melts right before your eyes—just like a slow-moving liquid. Great for children and adults, at home or in the office. "
In case you are curious, the secret ingredient is 2% polymer.