After living in the city for five years I know how precious lawns are to people, however small they may be. Often people only have a tiny little patch of soil with which to tend to, so it is incredible to see what some can do with so little. In any case, if perhaps you are craving just a smidgen more of organic material you should check out the Marko Vuckovic Grass Lamp.
Built form light PVC plastic material and housing an ultra-violet light, the Marko Vuckovic Grass Lamp actually has the ability to grow a lawn inside your house. However if you are looking to start a small tomato farm, you may need a bigger light.