Well, there are houses and plants that Tweet, so the clear next step is a Snuggie that does, too. The do-it-yourself site, Instructables, has a hilarious step-by-step guide to embedding a switch into your Snuggie so that you can use your blanket thing directly to send a message like, "Mmmm... So warm in here #smuggie," to all of your Twitter followers.
The system isn't very sophisticated; you can only send out a single string of text. But it's great as a training task for those familiarizing themselves with the open-source microprocessor, Arduino, which has become popular among physical computing enthusiasts.
In any case, why am I ruining this with real-life context? The point is that someone figured out how to make your blanket Tweet!