[Click & drag your mouse to “draw” with a given set of text][link]. I could see this being used to make some really cool JS-based generative art.
The demo explains it better than I can, and you really should check it out. This is a tool you should have in your utility belt.
[link]: http://codepen.io/tholman/pen/qCnfB “Drawing with text ยท CodePen”