I didn't have a clue that Kinetic Sand existed. This Swedish invention is made of 98-percent sand and two-percent sorcery, so it sticks to itself and nothing else, allowing you to cut it clean. And then it feels like it moves on its own, which is creepy. Like some weird matter that is alive.
My eyes tell me this is sand, but my brain is saying "you cray."
You can buy it here.