Bring a reusable mug to startbucks on Thursday April 15 and you'll get a free brewed coffee. This is part of Starbucks Shared Planet campaign -- to do business in ways that are good for people and the planet. In addition, to this freebie, if you bring in a resusable mug any day, Starbucks will give you 10 cents off the price of any beverage. Good deal and good for the environment!