Drips let you paint like Jackson Pollock, and you can save it online. And you don’t have to register for it.
Even cooler, it gives you a choice of painting it with either your mouse or your webcam and computer microphone. With your webcam, you can use your cellphone light or something else as a brush and your voice to change the color.
After you save it, you’re given its url address. Students can post it on a student/teacher blog or website and describe it, as well as comment on others made by their classmates.
I’m adding it to The Best Art Websites For Learning English.