The Flower Diffuser is our #1 best-seller — and it’s easy to see why. The sola paper flower slowly “blooms” as it absorbs the fragrance oil, creating a beautiful, eye-catching display And like our Reed Diffuser, it pairs with our Diffuser Oil refill. Gingerbread is a warm, nostalgic fragrance. — fresh ginger and warm cinnamon with a sweet vanilla finish that smells like it just came out of the oven.