This is a brilliant idea:
Toilet Paper Horror Novel
It's a perfect example of thinking outside the ordinary. Of course this story should be written on a toilet paper roll because it is based on a Japanese folk tale about a creature who lives in the toilet.
We in the book world tend to hold on too tightly to our ideals of the hallowed halls of traditional publishing. But this is a new century, people. Dust off your creativity and think outside those halls.