Google recently snuck in another fun Easter Christmas egg; a festive snow effect, with a steamy twist!
Searching for let it snow adds snow-fall to the results page, no-doubt to distract you while your browser window subtly mists up.
Delightfully, you can then draw in the steam.. or in my case, scrawl swear words.
Oh, and defrost button is sensibly provided, should you decide that you really ought to do some work today.

“Merry Christmas” works as well, but it’s not THAT cool.
And did you see the bug? In iPad, when I hold it in portrait the snow falls to the direction I turn the iPad to, but in landscape it has an “anti gravitation” bug