I'll answer by repeating my post from the other thread:
I use the example of the gradually increasing light of the Advent wreath as the pattern for decorating at home and Church.
At home, the decorations begin with creches at the beginning of Advent (minus the Christ Child, who does not appear until December 24 mid day) and these will remain up through Candlemass. Outdoor lights are added in groupings each Advent Saturday. Right now blue bulbs predominate; and I actually have a grouping of four wild cedar trees that will serve as a living Advent wreath.
At home and Church alike Gaudete Sunday is the turning point...that is when the trees appear. Church poinsettias do not arrive until Advent 4. The church nave has deep window sills so the only creche figures at the stable (also placed on Gaudete) are animals and a shepherd. Mary and Joseph are on a front window ledge. The Magi and their camels are much farther back, and will move forward with each successive Sunday or Festival. The church creche also stays up through Candlemass.
Returning back home, Christmas Eve is the big outdoor transformation when many of the blue lights are suddenly supplemented with clear; a wire sculpture creche is lighted, plus a whole lot of clear lighted wild trees. And these remain lighted through all of the twelve days! Lights remain "up" through January 5.
that's an absolutely beautiful adaptation of the tradition using modern lights. Thank you for sharing.