You could try roasted root vegetables? Or just steam any veggies that you know they like.
This is my first Thanksgiving here. My husband will be working that day but I do want to make a Thanksgiving dinner. I'm making a turkey crown, mash, gravy (Bisto), stuffing (pre-made from Tesco), green bean casserole, candied yams, and cranberry sauce (jarred). Pumpkin pie and cheesecake for dessert. It's a lot of food for just the two of us, but I like leftovers.
Next Thanksgiving, when our house is in order, I might like to have my brother in law and sister in law over.