In Luxembourg a Christmas tree is not traditional. People give and get presents on December 6th, St. Nicholas day. If kids have been really good St. Nicholas will come the before to give presents. If a kid is bad they will get a knock at the door from Black Peter and he will give you twigs or sticks or black coal. If you are really bad Black Peter will chain kids to his belt and go with the kids kicking and screaming. I think that is really mean.