Outdoor, Small Patio, Porch, Deck, Walkways, Grass, and Gardens “In the beginning I really wanted the container to be off the grid but solar is still very expensive in San Antonio, especially for small spaces,” says Hill. “The green roof was an element that I had not thought of at the beginning, but as it turns out saves me more money on air-conditioning than the solar would have, and is a lot prettier.”  Photo 2 of 10 in 9 Small Spaces With  Color from Smaller in Texas