Free Starbucks Coffee Today – April 22 Happy Earth Day everyone! Go celebrate with some free coffee at Starbucks! All you have to do is bring in your own mug. you might also like...SightGlass Coffee - San FranciscoFree Pastry at Starbucks with Beverage PurchaseHappy Doughnut Day - June 3The Daily Double Shot - June 1, 2012 Twitter Facebook Del.icio.us Digg StumbleUpon Google