I guess it had to happen -- a widget with a holiday theme, and one that gives you some useful information. I'm talking about SNOWidget, from developer Johnny Ixe who gave us the handy and useful DataMan app.
Download the free SNOWidget app, and then load it from your pull-down Today notifications. You'll see a nice animated snowfall, and a quick reminder of how many days are remaining until Christmas. The app allows you to set the size of the widget, the font, and it can measure days or hours until Christmas. What more could you want?
SNOWidget requires iOS 8 or later. It's optimized for both the iPhone 5 and 6 series. It's whimsical. It's free. Go get it.