If you're looking for a quick little accessory you can knit up before the end of the year, why not make yourself an easy Knit Wrap Bracelet? This beauty is a bit of I-cord (actually, rather a lot of I-cord) topped off with a fun button.
It's worked in self-striping sock yarn so you get a bracelet with a lot of different colors without any work on your part. You've probably got a scarp in your stash that's big enough to make this beauty, which will give you a jump on your resolution to knit more from your stash.
If only a tiny one.