I like the precedent that Redbox is setting here. Since their 10th birthday (really?) is coming up, we can use code BIRTHDAY on Wednesday, October 10 to get a free Redbox movie or video game rental.
But like I said, this brings up a much larger issue. I think from now on I should get every 10 year old's birthday presents. I've got my eyes set on some LEGOs and retro Ninja Turtle action figures, so please buy accordingly.