Should you want to carry the festive yuletide mood to your computer, Xmas Tree offers one decorating option. A small animated Xmas Tree is displayed in the upper left-hand corner, with limited options to customize it available on a right-click menu. You can set the opacity level and move it around on the desktop, set it to stay on top, or opt to load the program at start-up.

Xmas Tree - absolutely freeware.