Can Media be more Ubiquitous, Cheap, and Lightweight?

Inspired by this post from fastcodesign, "Can Media be more Ubiquitous Yet Less Invasive? Dentsu and Berg Show How", I would like to do a few quick ideation in the near future on what else might be great "surfaces" to print designs on.

In their video, I love the following examples:
I could see how searching through images while listening to an audio only piece could help cement my memory on the talk with these visual cues.

"Print is cheap and using the receipt as a reading surface"
Today, receipts are used to print coupons and links to provide feedback to the people who had serviced us today.  Paper coupons aren't enough incentive for me and the survey on the receipt has also lost its cool factor on me.  Markets do know our likes and dislikes from that we shop, perhaps they can deduce what types of information on the receipt would interest us and also be a win-win for the shop...
"You like technology news? Well, this week's "Popular Science" features so and so awesome articles."  Me: "Oh la la, intriguing. Let me go back to the shop and pick up this week's Popular Science".
Or, why would I look back at the receipt in the first place?  I tend to look at the receipt to verify the charges are accurate.  Perhaps shops could sell me financial services on how else to save money. Geico: "5 minutes can save you $5,000 in your next car insurance bill!" Customer: "Oh yes, I do need to find ways to save money, I should switch to Geico..."

I love the idea of embracing your fans by showing them off on the receipt for everyone to see.  Announce the current mayor of the shop and celebrate!