Heh heh, a 12 lb turkey sounds so small to me!
Right off the bat while you're carving, portion out enough to make the other meals. Figure you'll need 1.5 - 2 lbs per meal, right? So portion out what you're sure your family will eat for the meal immediately. Let your husband claim his turkey leg or whatever, and you plate what you want, etc.
Then put aside enough for seconds or for supper later on.
But keep on carving and have some freezer bags ready. Next, portion out about 1.5 lbs of meat into each freezer bag. Let it cool, and then freeze right away. If you plan to use some the next day then keep one bag in the fridge. You should be able to get maybe 3 bags of turkey out of it. You'll have to wait for the bird to cool while you're eating and then flip that bad boy over to get into the underneath parts too. You don't want to miss the dark meat that likes to hide up under the thighs.
This way you have ready portions for future use that you don't HAVE to use immediately. Feel like making fajitas? Pull out a bag of turkey and after it thaws, cut it into small chunks or rip it up, warm it up with some water and add the seasonings. It's already cooked so it won't take longer than it takes to make the sides.
Feel like having chef salad? Dice it up and toss it onto a green salad with all of your favorite veggies, olives, some cheese, and your favorite dressing. Pair it with crusty bread and you're set.
Buy a blob of dough from the grocery store bakery and stuff it with turkey that's been tossed around with some tomato sauce, cheese, some green peppers, mushrooms, or whatever veggies you like in sauce (I'm thinking ratatouille style) and then bake it until it's golden.
There are so many things you can do with it.