My quest for an entirely maintenance-free house plant continues, but this vertical garden kit from Flora Grubb comes close:
Above: A lightweight Airplant Frame made of powder-coated aluminum won’t rust, so the vertical garden kit is suitable for indoor or outdoor use; 19 inches high by 11.5 inches wide and available from $195 from Flora Grubb.
Above: Designed by Landscape Architect Josh Rosen, the vertical garden kit can be removed from the wall with tillandsias still attached. Submerge the whole thing to water your air plants.
For more ideas, see DIY Vertical Garden Kit: Just Add Water (and a Wall).
(N.B.: This is an update of a post originally published November 2, 2012.)