How to Make Clay Cardinal Christmas Ornaments DIY Learn how to make clay cardinal Christmas tree ornaments with air dry clay and some easy tools. These cardinals are a symbol of loved ones, a good omen and bring lots of joy to all that see them and they make the perfect Christmas craft. Air dry clay dries to a ceramic-like finish and is a great family craft, great for handmade gifts and for DIY holiday decor this Christmas season. I decided to do a cardinal themed Christmas tree this year because they are just beautiful! They are a sign of goodness to so many people, they bring hope and the thoughts of loved ones long gone. When I lived in the south for 3 years I loved seeing these red bandits flying and perching in my tree. Making DIY clay ornaments if so much fun and a great way to celebrate the holiday season with family. Air dry clay is much easier to work with than salt dough ornaments or oven bake clay--and almost have ceramic ornaments feel. Supplies Needed for ...