For many years it was a tradition to decorate a full size Christmas tree for each holiday.
It was a challenge to decorate one for Halloween as I did it for my young grandchildren which ruled out anything scary.
Eventually I gave it up as it was way too much work. The biggest part was changing the lights for each tree. I did luck out on the Halloween and Thanksgiving trees as I just turned the face on the jack o lanterns to the back and I had pumpkins for Thanksgiving.