Abstract: A vegetable growth module comprises: a) a rack divided into two or more compartments located vertically one above each other, each compartment being adapted to house a growth tray base; b) an upper segment adapted to house a water-deflecting tub; c) elements adapted to fasten the rack to a vertical wall; and d) water flow and flow-direction elements provided within the rack, to direct the flow of water from one compartment to another compartment located below it.

Abstract: An air freshening system, including: an air compressor, for flowing air; a water inlet, for supplying water; a central pipe, for receiving the air from the air compressor, and for receiving the water from the water inlet; and a plurality of end devices, each including: a water dripper, including an inlet, for communicating with the central pipe; a filter, for filtering the air; and an outlet, for supplying filtered air, thereby allowing cleaning the filters of the plurality of end devices by supplying the water thereto.