Invite: Victorian high tea or London debutante's ball OR an evening in the Realms. The first could have an invitation in calligraphy on cardstock, wrapped in a velvet ribbon. The second could be an evite or webpage with flashy-flash bits so that it looks magical and creepy. (Really, you can be both magical and creepy. I promise.)
Décor: Could be fashioned after Felicity's tent at Spence, with dramatic curtains of damask or velvet. Peacock feathers (or homemade peacock wallpaper). A Victorian-style portrait of Eugenia Spence.
Movies: A Room with a View, A Little Princess, Great Expectations, Picnic at Hanging Rock, The Forsyte Saga, Moulin Rouge
Craft: Make personalized fans, ostrich feather “crowns,” your own fortune-telling deck or Order pendants, paint mendhi designs on your hands, illustrate maps for the Winterlands/Borderlands.