Our tree doesn't have a theme. WE have many beautiful ornaments we have collected over the years. My husband does like motorcycles, so when we were buying eachother an ornmanets every christmas, I would get him the newest Harley Davidson ornament from HallmarK. He would buy me the newest religious related halmark ornment. We have all kinds of ornaments on our tree, and thats what makes it so special because looking at them all brings back so many happy memories.