I'd like a whole new system (motherboard+cpu+memory+video card), even my actual is not that bad but since all my income goes into building the house I currently live in and mortgage and other stuff related to that, I can forget upgrading. At least a new monitor, full HD, will be enough. But all the money I've saved so far will go into buying presents for my loved ones and leave my desires for upgrades go on to the next year.
That said I wish you all Happy Holidays and may the most of your dreams come true but best off all I wish you to be healthy and thankful for each day spent on this planet. I know I am!