@gigglebush_ok: This little VIVOSUN mini USB humidifier is perfect for my plant shelf. It's small, plugs right in with USB, and it keeps the humidity up around my plants without taking up a bunch of space. My syngoniums and tradescantia love it, and I just set it on the shelf and let it run. #VIVOSUN #MiniHumidifier #PlantShelf #Houseplants #PlantCare