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...Look Ma, No Pants!SightGlass Coffee - San FranciscoMyBart Event DiscountsCaptain Crunch Frappuccino at Starbucks Twitter Facebook Del.icio.us Digg StumbleUpon Google