A pared-down version of a terrarium, the Mosser consists of, well, moss. Mist it every once in a while and it will keep you company at work:
Above: Created by Jennica Johnstone and Noah Atkinson, the Mosser is handmade to order; it's $26 from Mosserstore. Each one-of-a-kind Mosser is made from sheet moss (typically hypnum imponens) and will thrive in shade and tolerate dappled sunlight.
Above: Housed beneath a simple glass dome, the Mosser comes with a glass bottle for misting.