Christmas Joy Gnomes Santa Yard Sign Cutouts, Christmas Theme Decorations Xmas Props, Christmas Gnomes Santa Yard Signs With Metal Stakes. Economical and durable, our Coroplast Yard Signs are a staple of outdoor advertising. These Xmas Yard Cutouts Outdoor 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.