Do It Yourself Ornate-Shaped Clear Christmas Ornaments makes festive holiday DIY projects! These plastic shells let you create your very own ornaments! Hang ornaments on your Christmas tree, around the house or give them as a handmade gift. When it's too cold outside to play, these make a wonderful wintertime do it yourself craft project. We recommend using crayons, colored pencils, washable markers, permanent markers or acrylic paint, sold separately online. (1 dozen per unit) 2 1/2" Plastic.