If there's one thing I love, it's Harry Potter - especially Luna Lovegood.
These earrings are modeled after the actual Dirigible Plum, not the earrings that Evanna Lynch made after them.
The Dirigible plum is an orange radish-like fruit that are believed to enhance the ability of one to accept the extraordinary.
"These are the Wrackspurt siphons — to remove all sources of distraction from the thinker's immediate area. Here, a billywig propeller, to induce an elevated frame of mind. Finally, the dirigible Plum, so as to enhance the ability to accept the extraordinary." —Xenophilius Lovegood explains the elements of his replica of Rowena Ravenclaw's Diadem.