I discovered this site a few days ago and been visiting it at least once a day to kill time.
http://www.thisissand.com/
Press and hold the left mouse button to create a stream of sand; double-clicking will result in a steady, continuous flow. The [C] key brings you to the color picker, where you can choose the hue of your sand; dragging between two colors will produce a very nice gradient effect. Or you can click on the colored circle. You can press [E] to erase any false starts or less-than-pleasing pictures, and anything you love can be submitted to a gallery of thousands of user-created masterpieces!
These are some of people's creations.
http://www.thisissand.com/
Press and hold the left mouse button to create a stream of sand; double-clicking will result in a steady, continuous flow. The [C] key brings you to the color picker, where you can choose the hue of your sand; dragging between two colors will produce a very nice gradient effect. Or you can click on the colored circle. You can press [E] to erase any false starts or less-than-pleasing pictures, and anything you love can be submitted to a gallery of thousands of user-created masterpieces!
These are some of people's creations.