I think what we need to do is eliminate all the simple and irrational ideas. I don't think the map idea will work, in most cases when people are lost they tend to ask people for help. Also all the grand theft auto idea should probably be flushed down the drain; too much confrontation and liability.
I agree with Julia I think the singing idea might work, the actual person we confront on liter could be in on it and we would just see the reaction of bystanders. The idea is not fresh/new but it would be our own take on the napkin video Goldfarb showed us in class. Unfortunately I can't sing but I am currently taking gospel choir. Maybe I can ask my fellow choir students to help out.

Places and Times when we can do this:
Wednesday when everyone is waiting for that chicken plate or I guess any afternoon in price center.

The more and more I think about it, I think the littering idea works. This class is about one's public space and I guess it would be okay for there to be confrontation when one feels that their public space is being violated.