Making a Christmas tree out of pine cones is a simple and fun project that can add a rustic, natural touch to your holiday decor. To start, you'll need a few supplies: pine cones, a glue gun, some wire, and a Styrofoam cone. First, you'll want to arrange the pine cones on the cone in a way that creates a full, even tree shape. Then, use the glue gun to attach the cones to the cone, holding them in place until the glue has set. Finally, wrap the wire around the cone to secure the pine cones and give it a finished look. With these simple steps