Bring your own coffee cup and save - yes it's a little bit at a time but if you are a frequent coffee consumer every bit adds up. Here are a few places that reward you for your efforts:
Einstein Bros. Bagels Save 40% off coffee when you bring your mug - coffee for just a $1!
Peet's Coffee and Tea Save .10 when you BYOC, and receive .25 off coffee beans when you bring your own bag.
Starbucks Save a dime when you bring your own mug.