I always had Easter celebrations and Christmas trees. I also don't relate them to being Christian to my friends or my family. Both are fun little holidays with nothing to do with Christ. I taught my children that from the earliest times, and told them about the same time as they learned Santa was phony, that along with the tooth fairy they were all secular celebrations. There is nothing grim about Sabbath and Saturday worship. The remission of sin and the awesome sacrifice by our Savior is quite serious, but not grim at all. He conquered death, now we just follow his example.