I wasn't completely sure where this would go, so I put it here. Since it's the holiday season, I figured I would post this here for anybody that wants it. Basically I created a screensaver that snows, and you can set it as your desktop wallpaper with a Terminal command. Here's what it looks like. You have to download this Quartz Composer composition, and paste it into /Users/You/Library/Screen Savers. Then open up System Preferences, go to Desktop & Screen Saver, then Screen Saver tab, and then expand the Other section. Double click on 'Its Snowing' to set it as your wallpaper. Now open up Terminal, and copy in this: /System/Library/Frameworks/ScreenSaver.framework/Resources/ScreenSaverEngine.app /Contents/MacOS/ScreenSaverEngine -background After doing that, just minimize or hide Terminal, and wait a minute for the snow to show up. It uses very little CPU power, and quitting Terminal will stop the process. It's 1440x900, but I can make it different sizes if needed. I can also change the background picture if you want. Enjoy!