There's a neat, environmentally-friendly plant-watering system you can build for almost no money. It is made from recycled plastic soda bottles, so after you have had your soda, you can make one of these devices, and when it breaks you can still recycle it again! Don't like to let strangers in your house to water your plants when you are away but don't like coming home to dead plants either? Check out www.kahnlandscaping.com/blog.html. It has step-by-step directions.