With ultrasonic diffusers, "essential oils just sit on top of the water ... extracted from a specific part of a plant, such as the flowers, seeds, roots, peel, bark, or leaves.

The diffuser features two mist speeds and an optional ambient light, so you can run it for four to eight hours, depending on how strong you like your fragrances. The top-fill reservoir makes setup ...

the textured painting over the citrus, and the wee green leaf at the top ... $6.99 Buy Now Beyond diffusers, you could also repurpose them as makeshift vases for small flowers, or even as a ...