A few years back, Google introduced “GMail Paper” as an April Fool’s prank. The idea was that by clicking a “Paper Archive” button, you could have any or all of your GMail messages printed out and delivered to you (for free!).
It’s not quite GMail Paper, but this year, for Christmas, Google is letting you send a for-real paper Christmas Card to anyone in the US. It’s limited to one per person, but that’s still a fun idea.