There are of fun tools which let you draw random shapes on the browser directly. “Spin String” is a similar flash based tool but a bit more interesting. Spin your string lets you draw random lines and suspend them as strings and finally make them rotate.
Open up “String Spin” and start drawing random lines by clicking anywhere on the white area and dragging your mouse. Your lines will now start rotating about a point. Click on “Click here to spin your strings” button and your strings will make a full 360 degree rotation. Draw as many random lines and each time you’ll see a different spinning shape. You can create a new shape to spin by clicking the “start over” button.