I second deviled eggs.
Deviled eggs with jalapeno and really good mustard. Smoked paprika on top.
I think I found zoosermom’s mashed potato recipe: http://talk.collegeconfidential.com/discussion/comment/12797282#Comment_12797282
It’s post #190.
I always thought the rings on the jelled cranberry sauce were there to make it easier to slice. I like it, just like I like mint jelly with lamb chops. But I have a sweet tooth.
I love the cranberry and orange relish (uncooked but sweetened.) I’m the only one who really likes it but I make it for myself. My H always buys the canned jelled stuff - a few years I have legitimately forgotten to open the can but the rest of the family remembers.
It was shared by @FallGirl and I copied it as she wrote it.
I used maybe half the butter and no cheese. I probably also used low salt corn.
Like the GB casserole, this is one of those ordinary ‘down home’ things that just works.
Corn casserole:
1 15 oz can whole kernel corn, drained
1 15 oz can cream-style corn
1 8 oz pkg corn muffin mix (Jiffy)
1 cup sour cream
1/2 cup (1 stick) butter, melted
Optional: 1 TBS sugar…she adds this and we love it!
Also optional: 1 cup shredded Cheddar cheese…we don’t use this
Preheat oven to 350. Mix corn, muffin mix, sour cream and melted butter. Pour into greased casserole dish. Bake 45 minutes or until golden brown. Remove and top with cheese if desired. Return to oven for 8-10 minutes or until cheese is melted. Let stand at least five minutes and then serve warm.
Thank you, @PurplePlum 
Pepperidge Farms stuffing mix; IN the turkey (gasp!). Yes I know all the arguments against both, I use a thermopen to make sure everything has reached a safe temperature. The turkey and the drippings for the gravy just don’t taste right unless I stuff the turkey with my own recipe, based on PF. No shame about either!
Pilsbury Crescent Rolls!
I can hear the pop of the can, @garland, the pop of the can!
I just read that the inventor of the Green Bean Casserole, died today -Dorcas (love that name!) Reilly.
As an immigrant, I stuff the turkey with fried rice, LOL!
I adore deviled eggs. But I associate them more with the 4th of July than Thanksgiving. But one needs no excuses to eat them!
They are always the first thing to disappear at any gathering.
Someone mentioned stale biscuits. Does not compute. No biscuit in my house has ever lived long enough to get stale! 
My homemade cranberry sauce has a secret ingredient - dried cherries. Makes it so much better!
Dried cherries are the best.
Cranberry lovers might want to check out the recipe for cranberry tart in a nut crust in Martha Stewart’s Entertaining. It is unusual and very good. (Whipped cream is a must.) I found a version online but it is a little different.
One year I bought some of those copper jello molds at a charity store and made jello. People went crazy over it. I was amazed.
We always have green bean casserole (here’s to that lady!) and the jiffy corn bread casserole. We do sweet potatoes with brown sugar and pecans- yum!
Sorry folks, whole green beans are my favorite vegetable and always made without the casserole bit, although that is good, too.
Canned cranberry- of course but one needs both kinds, whole for H and jellied for me. But sometimes skip it because a whole can for one person just lasts way too long. H from India and no childhood traditions for an American style feast.
Stove Top Stuffing is a must now since I won’t do the work and don’t do turkey (not a favorite of mine).
I was shocked to find out a neighbor does not like pumpkin pie. I thought everyone did- the Libbey’s recipe on the can of course.
So many foods others always have we never did or heard of. Deviled eggs on Thanksgiving???
Once again we will have others over- combining an American and Indian feasts, some of each culture liked by the other spouse. No cooking the rest of the week!
Never had double ovens as a child or an adult. Everything needed to fit in the oven or on the four burner (electric) stove. My aunt had a big Nesco roaster.
To hijack this thread. There are some childhood dishes that will never grace my table. Red cabbage is one- we had it every Thanksgiving, and only on that day.
D2 would not tolerate forgetting to serve the jellied cranberry sauce. She doesn’t care much about anything else except a small amount of turkey to accompany it. I buy 2 cans, just so there is a little for the rest of us!
Does anyone else stock up on foods that are cheapest at Thanksgiving so they can have them later? There is no law that states you can’t have pumpkin pie, stuffing… any other season.
@wis75 - I think these things are cultural/regional. I have never had red cabbage on Thanksgiving or seen it anywhere else on Thanksgiving. All my Thanksgivings have been in the American South.
My mother is not a good cook, green bean casserole, yuck! I know mixing up canned things shouldn’t be yuck, but my mom managed! LOL!