Microsoft has added some optional holiday effects on the Bing homepage that will make any monitor look like a winter wonderland. The options are located on the right lower side of the Bing homepage and include adding in animated snow and lights to its trademark photo, along with ice around the border and some holiday bells playing in the background.
If you want to go all out, there's even an option to turn on an effect that turns the Bing homepage into a roaring fireplace, complete with sound effects. It's the perfect way for your PC monitor to get into the holiday spirit.
Thanks to Ryan for the tip!