In recent years, bubble lights have become more elaborate in appearance. Glitter is sometimes added to the vials for extra sparkle, most commonly on specialty types such as those used in decorative nightlights. Bases are now often made to look like figures such as Santa Clauses or snowmen, or decorative objects and symbols, rather than the plain ribbed plastic. Like many other Christmas decorations, they have been converted for Halloween use, usually with orange-colored liquid and a base that looks like a jack-o'-lantern, or the head of a black cat or witch, among other Halloween symbols.