I ran across an artist in my area of St. Louis, named Bill Keaggy.  He's a quirky guy and I couldn't help but follow his treks.  He published a book on grocery lists he found at the stores.

http://www.grocerylists.org/2011/04/01/the-milk-eggs-vodka-lifecycle/ video and info

Purchase at Amazon.com: http://www.amazon.com/Milk-Eggs-Vodka-Grocery-Lists/dp/144031201X/r...

His quote:  "If we are what we eat, then this book reveals deep truths about the average American (not to mention more mundane truths like a surprising number of people enjoy onions, and for most people, mayonnaise is very, very difficult to spell). "Milk, Eggs, Vodka" is a celebration of the humble grocery list. Almost anyone will find themselves engrossed in this voyeuristic look into everyday life - less than healthy lists, lists for parties, lists with personal and often odd annotations on them...and the list of lists goes on. Besides over 150 found lists, the book also includes short essays on collecting, shopping, eating, and list making. Some of the lists will even include recipes that can be made from the ingredients on the list!"

Another fun book of his is "50 Sad Chairs", photographs he took of left behind chairs for the dumpster:

http://www.amazon.com/50-Sad-Chairs-Bill-Keaggy/dp/1601671490/ref=p...

Amazon quote:  "This is an awesome work by Acrobat / Photographer Bill Keaggy, who witnesses tired and tossed chairs in downtown St. Louis. Each image is a mixed bag of forlorn and funny, a veritable commentary on our culture of consumption (at least as it relates to chairs). Have a look. And you ll soon notice: sad chairs are everywhere."

Check out his flikr site for other "stuff"...very interesting.  http://www.flickr.com/photos/bk/1362710209/