We only exchange gifts with a few families and they all request my homemade pumpkin bars every year. Personally I'd love to make something more "Christmas-y" like Christmas cookies or gingerbread, but they really love those, so I continue to make them every year. They are pretty time consuming to make, as are most homemade baked goods, so maybe that is why.
At times I feel guilty because the recipe calls for a cup of oil and a cup of sugar, eesh! But that's what they start asking for every autumn, and some request it when I see them at Thanksgiving. haha