This Penn Plax Set of three mini Skull Gazers with faceted Green eyes will look good in an Aquarium, Fish bowl, Terrarium or as  Display pieces or Cake Toppers for Halloween. One is a plain skull. The other 2 have Celtic patterns. Each is 2 1/4'' x 1 1/2'' x 2 1/2'' They would also look good in a Reptile Habitat. 2013