Red Jack Skellington in Santa Outfit Voodoo String Doll Keychain Nightmare Before Christmas Jack Skellington from String Doll World Collection of String Doll Icon Series. Handmade String Doll with loving attention to detail. Eco-Friendly, made from string and recovered textiles and beads. Comes with Keychain attachment for use as keychain or hanging ornament. Colour and design may vary slightly due to handmade nature.