Funny you should mention that for I was thinking about that same thing today, again (I believe I've mentioned something like this a couple months back). The reason for rethinking it is because I received in the mail a magazine size/type deal with pages of coupons for local business, with most of the restaurants have 50% off any meal when using their coupon. As I flipped the pages, I kept thinking to myself how Bitcoin could be incorporated into all this.
Another thing is this:
One of our local restaurants has these coffee cups advertising local business (nearby the restaurant). My insurance agent has an ad on those cups. I spoke with the rep over a year ago when they were delivered, but didn't get a price (didn't ask), although he tried to sell me on the idea by saying the cost is reasonable. I believe their website may provide an answer.
Just thinking out loud, here.
