A living object for a quiet desk

A world
under glass.

Moss, sand, a fern and a single mushroom, sealed under a glass lid. It makes its own weather; you only need to look in now and then.

Sealed and settled.

Care: indirect light, no direct sun, one mist every ten days. If the glass clears completely, open the lid for an hour. If it fogs entirely, leave it alone; it is raining inside.