Smell is so powerful, you know. My grannies would both bake things like shortbreads and cookies. I think whenever I smell those kinds of things it really takes me back to my childhood.
Classic Christmas cookies are really time-consuming. Instead, make a bar you can bake in a pan and just cut up, like a brownie or a blondie or a shortbread, which still has that Christmas vibe.
Think what a better world it would be if we all, the whole world, had cookies and milk about three o'clock every afternoon and then lay down on our blankets for a nap.