they have these great easy peel clemintines in the stores now. i LOVE those. my kids love them too.
cranberries. basic sauce or relish with less sugar. you could use stevia or other replacement i guess. dried cranberries are awesome in muffins/bread. with sugar free orange marmalade or orange zest. or the zest from clemintines
baked sweat potatoes/yams are the easiest ever. they really don't even need extra sugar, but you could have little toppings available. make a little potato bar? that would be yummy. and healthier than yams covered in marshmellows.
or similar idea for baked winter squash.
you can often use less or no oil with a little experimentation, than you might think. or replace it with chicken stock. which tastes waay better than canned broth.
butternut squash or pumpkin soup made with chicken stock would be healthy and yummy.
wild rice and mushrooms stuffing.
i often replace cheese, mayo ect with basil, pesto, mustard.
try to find low carb options. i'm not very good at thinking of those, but anyone that is on a low-carb diet, eating out is always difficult. sometimes lowfat is very high carb.