I've always tended to making any pies the day before - but could really use something I could easily have done 2 days before, or so. Or is just really easy.
I used to do a great maple-nut tart (but dd2 has nut allergies, and is young enough I'd really rather not have it around this year).
I have been considering homemade butterscotch pudding.
We'll have pumpkin pies and some kind of fruit pie (apple? pear-cranberry?). Other people will be bringing more pies and possibly cheesecake, though additional cheesecake is a possibility too. Lots of dessert choices are really important to my thanksgiving celebrations. And we'll end up having a bigger group this year than usual too (15 people, it looks like).