Water features are very relaxing and very effective at cooling the environment. They also look great and the plants will help filter and oxygenate the air. I was looking at a local fountain (photo above) and realized it would be easy to add some vent holes to help cool a home.
These luxurious fountains can be added to your home at extremely low cost if you use natural materials such as stone, driftwood and plants, and do the work yourself (DIY). Get creative with recycled materials such as chipped pots from yard sales and you could slash the cost to almost free.