Starbucks Buy One Get One Free 2-6 pmI’m sorry you missed this freebie, but please check more Free Samples currently available. Buy any fall drink at Starbucks between 2-6 pm and get one free to share! This offer is valid from Sept. 17-21 at participating stores. Fall beverages are Pumpkin Spice, Salted Caramel Mocha, and Teavana Oprah Chai. You can get these, hot, iced, or as a Starbucks Frappuccino.