What were Persephone's accessories?

Answer 1

Persephone did not need any such thing, as a Queen of the Underworld her powers are not to be limited by "accessories".

Answer 2

Persephone, in Greek mythology, is often depicted with a crown or wreath of flowers, holding a torch to symbolize her role as Queen of the Underworld and her journey between the realms of the living and the dead. She is also sometimes shown with pomegranates, which are symbolic of her time spent in the Underworld.