Outdoor Nativity Store, a retailer based in California with an extensive website, has a dedicated category for silhouette-style nativity scenes. Some are very basic and only include a few pieces, while others feature supplementary pieces, such as animals.
Products sold by the Outdoor Nativity Store are meant to be used as yard decorations, but Etsy sells a much wider variety of nativity silhouette items for other purposes including clip art and themed decals. Catholic Supply of St. Louis, Inc. offers another option for online shoppers. The nativity silhouettes sold there can be assembled without tools, and they are made of PVC.