This is a live wallpaper app that shows a sparkly Christmas tree as your wallpaper. The free version only does the sparkly tree, which is nice, you get more features with the paid version. Personally I don't think it's worth the $2, but you can decide yourself. I know live wallpapers really shorten your phone (or tablet's) battery life, but c'mon it's Christmas, live a little.
Google Santa Tracker
This app is made by Google, so you know it must be well done. This app allows you to track where Santa is on his journey around the world. You can also play all sorts of Christmas games and learn all about the different places Santa is visiting. Also, for Chromecast users, it has a Chromecasting feature that allows you to cast a map of where Santa is onto your TV, so you can watch all night and wait for Santa to arrive at your house.
This app is just like Doodle Jump except for it's Christmas themed. It's exactly like Doodle Jump to the detail, it's almost as if it was made by the same company or something. It's probably the best Christmas game out there, so if you're looking for a festive way to waste your time, this would be the way to do it.Christmas Sweeper 2
This is a sequel to a previous app (Christmas Sweeper (1)) the reason this one is linked is because it is better than the other one. It's practically Bejeweled, except for it's Christmas themed (Do you see a pattern forming here?). This is probably the second best Christmas game out there, so if you're looking for a festive way to waste your time, and you hate Doodle Jump, this is the way to do it.
KM Christmas countdown widgets
This last app is another cosmetics app. It is just a couple of Christmas widgets. There is a tree, a snowman then a Christmas Day countdown. It gives you the amount of days until Christmas or any other day of your choice. I got this app near the end of November and I set it to countdown to the first day of Blogmas. It's very stylish and easy to use. Great app, install it.