From my garden I have some natural balls that I think are a perfect decoration for Christmas. In early summer they are looking like that:They are blooming for quite a while and after there are plenty of rays at the stem that are having a little ball with seeds at the end. They are reaching diameters of 30cm and more. When they are dry I pick them and hang them up. For example over our kitchen counter.
And one is hanging on the ceiling of our living room since I hung it up over our Christmas tree last year.
They are reminding me of stars and the round form is like giant Christmas tree balls. Nature is forming the perfect decoration I don't have to add a thing to it.