Christmas figurines representing yuletide figures (Santa, angels, animals, etc.) have long been popular. The first mass-produced figurines were German celluloid tree ornaments, later also made in the U.S. and Japan. But inflammable celluloid gave way in the 1930s to ceramics (often hand painted), glass, and plastics. More recently, several makers (e.g. Hummel, Royal Doulton and Royal Copenhagen) have produced collectible limited editions.