The most enchanting way to incorporate the Harry Potter floating candles theme into your wedding is to find a vendor who will produce this magnificent display for you. I would recommend not using real candles though…don’t want wax dripping on your guests heads.
My husband, Carl, proposed to me with a book, so I certainly have a soft spot for this idea….putting the ring in a Harry Potter book! I love how this person specifically chose the chapter “The Unbreakable Vow” as the reveal with the ring!
If you have resources and live near Maryland consider hiring Charm City Cakes to make a smaller version of their Hogwarts Castle cake that was featured on Ace of Cakes. 
This is an example of an escort card that I designed for a Harry Potter themed wedding. The Sorting Hat seemed like the appropriate painting for this one because it is sorting guests to their table numbers.
I am LOVING your blog posts. I anxiously wait every day for your posting. No pressure. HAHA