One of the most popular ways to make large outdoor Christmas ornaments is to use chicken wire and lights. First, create the shape of the ornament using chicken wire and attach lights inside. Then, cover the wire with a layer of fabric, such as burlap, to give the ornament a rustic look. You can also add decorations like ribbons, bows, or even fake snow to make the ornament even more festive. Another option is to create a large outdoor Christmas tree using wooden pallets or branches. Hang lights from the tree and add ornaments to create a stunning display.