One night I dreamed I was in an old aiport that had been converted into a shopping mall, with gates and waiting rooms converted to shops and restaurants. Many of these businesses have wide windows looking out onto what would have been the tarmac but now converted to parkling lots for shoppers. This makes the mall quite bright and open, a rather pleasant place to visit. Anyway, I was strolling down the concourse when i spotted a college-age man waling ahead of me. sporting a futuristic-looking white backpack. A smallish flat-screen TV was affixed to the backpack, so anyone walking behind him could watch TVCurrently, the TV was running a cartoon featuring a sacrastic-looking blue rabbit named Bopper. (Not sure if this show exists in real life.) No idea why this man is walking around with a TV he can't see -- perhaps he was an art student doing some weird art experiment.
Anyway, this could be a great marketing venture, having people run ads on their acks for other people to watch -- like the 21st century version of the sandwich man. If you're in marketing and you like this idea, go ahead and take it -- I won't charge you for it.