Hint: Any image URL will do
You can use any image URL as a background image in order to make the experience as real as possible. Optionally it will simulate an emergency shutdown after 4 seconds to make it look real broken.
I'm happy to hear about any cool background image you use. Just drop a line to email@example.com
broken.speedymarks.comin the Safari browser. You can add it to the home screen by clicking the little plus at the bottom browser bar: