My students recently looked at a few articles related to James Franco's (Actor from Spiderman and many other movies) new art group movement. He and his collaborators are selling "invisible art". A buyer receives a card with a written description of the art work. There is nothing visual to look at except for the next written on a note card. The concept is that art is in the eye of the beholder and everyone's imagination is different. These note cards are selling from any where from $25 to $10,000!!!
This article is from Scholastic Art.