Starbucks.
10 cent discount with reusable mug (advertised)
Reusable mugs for sale
-central location, easily visible & accessible
Learn more: http://www.starbucks.com/store/16763/
Amer's.
Comet Coffee.
10 cent discount with reusable mug (advertised)
Learn more: http://thefarmersmarketer.com/comet_coffee.html
Espresso Royale.
10 cent discount with reusable mug (advertised at some locations)
reusable mugs sold (at some locations)
Learn more: http://www.espressoroyale.com/location.phpid=19