Here's all you need to do: go to Google.com, type "Let it snow," and sit back and enjoy the show. What show? Why, the snow, of course. Here's what things look like as the snow begins falling:
Then, a few moments later, after more snowfall, it looks like this:
The page fills up with snow pretty quickly, and eventually begins to block the search results and the information on the page. No worries, though... you're a seasoned veteran of winter fun... just write your name in the snow (I wrote "ReelSEO" but it's not easy to make out in this image):