It may be a little to late to start knitting all Christmas presents now, unless you can knit 24/7 through December. But, you can always knit something cute to decorate your home or just for fun.
On Ravelry you can find a knit-along for an Advent Calendar Scarf where you get a little piece of the pattern every day until Christmas.
Drops Design has a Christmas Calendar where you can open one window per day. A good exercise for the impatient knitter ;)
For me, there won’t be much knitting until I’ve finished my exams on the 15th of December. I can’t wait! :)