We have a potted Norfolk Island Pine tree that we have up the whole year. It's about five feet tall, and at Christmastime we decorate it with ornaments and tinsel (but not too heavy, right now our tree is kind of weak because it needs more humidity) and it kind of looks like a dorky stick with decorations on it. But it's our friend, and we keep the Christmas decorations on it until February usually.
So it's a real tree but not a cut one.