The winter solstice, Saturnalia, is a celebration with some of the deepest, most instinctual, significance. The world looks dead, Ceres is in deep mourning for her beloved Propserpina, and there is the very real possibililty that Ceres may destroy the world before Proserpina can return.
Nothing is guaranteed.
People celebrated then as much from fear of the end of the world as from love of Ceres and an attempt to cheer her up and ease her loneliness. Every religion that touched Saturnalia has only added to it, rather than detracted from it, making it even more powerful over the years. Shape the cookies into Janus faces, moons, gingerbread babies, eggs, stars, suns, and green man faces. Indoor trees can be decorated with suns and stars and symbols of all our Gods. A proper gift could be to have little figures of Saturn to give to guests that may visit.