Holy Nativity - Shepherd With Sheep Yard Sign Cutouts - Christmas Yard Décor for Holiday Winter Decorations Outdoor with Metal Stakes. Economical and durable, our Coroplast Yard Signs are a staple of outdoor advertising. These outdoor Nativity Shepherd With Sheep yard Cutouts full color direct printed graphics are vertically fluted for use with a Stakes. Coroplast is typically used for yard, parking, real estate, and election signs. They are waterproof.