In our house as you walk there's a space open above the closet in the foyer. There is cathedral ceilings above it so there is a lot of room at the top of the closet. It is five foot by seven foot. I usually have my plants there. This winter I would like to build a miniature green house there, complete with artificial lighting. A friend of mine has a hydroponics system and it works great but there's no taste to the vegetables. Sure there's no dirt but I think that the vegetables draw from the earth which makes them more tasty. So I think I will do it my way.