(I hope in the end will be) ... a simple product/device that can be installed on every tap. This device can be filled with different types of cleaning products and has a switch that enable a system that will use the water or air pressure to generate foam/bubbles. Using special detergents that do not need to be washed out (maybe just wiped out with a towel) will reduce significantly the amount of water that is used for washing/cleaning in general.

 � also could be a device that you can fill with water and cleaning products in desired quantities and use it independently like a pump.