In any case, these are the people I met yesterday walking to work. They represent a brand of triple-insulated coffee cups called “Chinet Comfort Cups®.”

When I approached the woman wearing the rather large coffee cup on her back she smiled and asked me if I would like a free cup of coffee. I said, “Sure,” and asked her about the promotion. We spoke about the product for 30-45 seconds and I went on my way.

On my walk to work, I thought about street promotions and how brands could use Foursquare to build excitement around an event or location. I began brainstorming how to tie the two together.

Here are some of my ideas:

• Mayors (frequent visitors) could be honored at certain times during the promotion and awarded special prizes
• Anyone who checked in at the promotion would be entered to win a special prize
• Anyone who checks in at the promotion on a certain date receives a discount coupon

What do you think? How can brands use Foursquare to make street promotions even more interactive and engaging?

-@ajgerritson