Plant-In City's latest design development utilizes a fog/cloud system and it's debut Offsite at Sight Unseen in May 2014.  It's essentially a self enclosed (glass partitions) ecosystem that self-automates a fog/cloud based on a programmed environmental sensor using an arduino micro-controller and there's also an analog control.  

This is the first modular terrarium in the form of a coffee table.  It will be enclosed with glass and within the unit lies a bed of moss and air plants alike.  The table is part of the Plant-In City modular system and it can connect/stack with other plant-in city terrarium units, allowing the fog/clouds to hangout or traverse from one unit to another.

 

available in Teak and IPE