Now, I must admit I'm addicted to Starbucks. I have a problem. My brother in law (who's a Dave Ramsey specialist) would probably have a heart attack on the spot if he could calculate the cost of my addiction. But thankfully he has not tried to do so - yet. I just know one day I'll come home to a room full of family and friends and a camera from the INTERVENTION TV show but until then I'm living blissfully in the land of addiction. Because of this addiction I get these fabulous coupons, let's just say extremely often. So if you too have one of these coupons laying around the house you could possibly cover up the address with a "Back to the Grind" card and presto - your gift recipient can order ANY drink, ANY size on you (and might I add your addition;).
UPDATE: And THEN if you happen to know an extremely crafty chick (firstname.lastname@example.org) who owns the coolest die cut machine on the planet she might like your idea, come up with an idea of her own and whip out some things like these: