You no longer have to go to the beach to spend hours playing with sand. OK, so you can't make any sand castles out of this stuff, but we guarantee that you will end up playing with it for hours.

This space sand is said to be similar to the sand you find on Mars. The sand is specially treated to give it a sort of water resistant coat. So plop the bag of sand into a bowl of water and when you hook it back out it is completely dry! If that's not amazing enough then you can spend hours sculpting it (hence it is also known as scuplting sand) under the water.

This might sound all a bit naff, but take our word for it, it's weird and strangely addictive!