This is an easy one – Just sign up on Starbucks website to get a free coffee (or any other drink) on your birthday. They will send you a nice postcard when it is near your birthday. You do not have to use the free coffee postcard exactly ON your birthday, just use it within a week or so of getting the card.
If you are not a coffee drinker (gasp, we hope it isn’t YOU) you can get a non-coffee drink like a Strawberry Frappuccino, OR bring a friend and get a coffee drink for them being how they just took you out to that restaurant with the $45 steaks. It is the least you can do.
You need to get the OFFICIAL postcard in the mail from Starbucks.
The image here is a scan of the 2010 birthday postcard mailed from Starbucks.
Starbucks Birthday Postcard for Free Coffee