For authentic invitation cards, the guide recommends designs featuring coats of arms, banners, or motifs such as old castles, palaces, and fairytale books, and suggests using vintage-style digital templates. Costumes and accessories for various roles include knights (helmets, swords, shields), damsels (royal jewelry, dresses), monks (robes, cross necklaces), as well as peasants, kings, or mythical creatures like dragons and witches with appropriate props such as crowns, scepters, or wands.