It's only the middle of December; you still have time to knit a sweater for everyone on your list!
You can whip up one of these little sweaters in a couple of hours. The project is worked in the round from the top down, with no seams. The tiny coat hanger makes it easy to hang up on your tree.
Yarn, needle size and gauge are not specified because you can use any yarn you have in your stash. The thicker the yarn, the bigger your sweater will turn out.