FREE COLD FOAM: Cold Foam Days at Starbucks take place from May 7 through May 11. Rewards members in the U.S. or Canada can add cold foam to a cold beverage for free. 

Starbucks has a legion of dedicated fans out there who probably love and hate their relationship with the store in equal measure. Sure, grabbing your favorite drink from Starbucks every single day is the treat you absolutely deserve, but those costs are surely adding up.