This may not affect that many of you, but if you're a fan of sending out cards like I am, make sure to stock up on Forever stamps now!
There's going to be a 1-cent increase on regular stamps (currently 44-cents) starting January 22nd, 2012. A 1-cent increase isn't much on its own, but if you send out a lot of cards, it definitely adds up! Also, if you buy the Forever stamps you theoretically (it's the plan, anyway) won't have to worry about stamp increases anytime in the future as well, since Forever stamps work, well, forever, haha.
If you don't feel like going to the post office to buy stamps- I got a bunch of fun stamps from the USPS website - it's only $1 for shipping no matter how many you get, so it's a great way to stock up. They have cute birthday/celebration stamps, hobby-related stamps, and my personal favorite, Pixar stamps!