Do It Yourself Large Clear Christmas Ornaments. The way to decorate your Christmas tree just the way you want is clear! Do It Yourself Large Clear Christmas Ornaments feature plastic spheres that pop open to easily fill with your own tinsel, ribbons or other embellishments. Makes fun holiday DIY crafts for kid and the entire family. Personalize one for each member of your family. (6 pcs. per unit) 4". Plastic.