I do Bubble ans squeak with my Christmas leftovers, although it never includes turkey. Not fond of turkey, find it too dry, and a bit coarse in texture.
Shall be having pork and crackling, with all trimmings for my Christmas dinner
Add onions, and chop up some of the meat, throw in the leftover veg, add some butter, and fry briskly. The aim is to get the edges crispy.
Yummy