Probably the biggest improvement to our families T-Day meal was when we started using homemade turkey stock. I use it to make our stuffing, I add it to the mashed potatoes and whatever else calls for any sort of liquid and of course to make sure we have plenty of gravy on hand (and allows you to make it in advance).
Our local butcher always has plenty of miscellaneous turkey parts on hand this time of the year and they are very cheap. I roast whatever I can get and add it to a stock pot along with carrots, leeks, celery, onions, thyme, bay leaves, and black peppercorns. How do you make yours?