I like to make a turkey pot pie. Put a pie crust in a deep 9 inch pie dish and bake it at 450 degrees for about 8 minutes, or until it is nice and brown. Meanwhile, melt a couple of tablespoons of butter in a big skillet over medium heat, then saute about a cup to a cup and a half of frozen mixed veggies until they are thawed out (a few minutes). Add about two and a half cups of chopped up leftover turkey and cook for another minute. Sprinkle three tablespoons of flour over the meat and veggies and stir until the flour is absorbed. Then, stir in two cups of turkey broth (I make a big pot of it from the turkey carcass and freeze most of it). Season to taste with salt, pepper, and whatever herbs you like. Marjoram and sage are nice! Bring to a boil, stirring constantly, until thickened. Pour into pie dish, cover with top crust, seal and crimp edges. Bake at 350 degrees for 25 to 30 minutes or until crust is browned.
I also like to make a turkey salad like @buster described, with nuts and apples or grapes (those tiny little champagne grapes are perfect if you can find them). So quick and delicious.
My favorite, favorite, favorite thing to do with leftover turkey though is to cut it up, mix it with leftover giblet stuffing made exactly the way my parents did, warm it all up, maybe open a beer…mmmmmmmmmmmmmmmm…....... This is why I always make my own turkey dinner the weekend after Thanksgiving. We go to a relative’s house for the holiday, so the only way to have leftovers is to make our own!