Exploration 3: `This is sand' - while away hours with this creative website.

Create virtual images with this website >>>> `this is sand' As you play you will see pixels drop like grains of sand or snow.  When the page loads it looks grey and blank - there's a small box on the top left - click on it for instructions on how to use this simple programme and how to change the colour.   The gallery has some wonderful examples.   Thanks to Bev on Technostories for this idea.