Trumpery

trump·er·y (archaic)

noun: trumpery; plural noun: trumperies
  1.attractive articles of little value or use. practices or beliefs that are superficially or visually appealing but have little real value or worth.

adjective: trumpery
  1. showy but worthless. "trumpery jewelry" delusive or shallow. "that trumpery hope which lets us dupe ourselves"

Origin - late Middle English (denoting trickery): from Old French tromperie, from tromper ‘deceive.’