Garland Christmas Tree is a full-featured desktop animation of a Christmas tree. You don't just get the regulation tree, with a star on top and presents underneath: there are also strings of lights which flash in various sequences, while glittering Disney-type stars fall gently nearby.
We didn't find this quite as distracting as you might think. Sure, if you're working to a deadline then it's probably something you'd put to one side. But otherwise you'll probably be able to carry on with regular day-to-day activities, while the tree flashes quietly in the corner of your screen.
If you find the effects annoying, then right-clicking the tree reveals some useful tweaks. You can turn off the animated stars, or the lights; increasing the tree's transparency may also help, and if you clear the "always on top" setting then it won't be visible over other programs.
There's also a bizarre animation, fortunately disabled by default, which has colourful balls bouncing in front of the tree. It's just weird; ignore it.
But the rest of the program is great, and the perfect way to add some festive fun to PC.