The Hydraloop is not particularly sexy, but neither is conserving water. It's just common sense at this point. This device—it's big, like a refrigerator—recycles and cleans about 85 percent of the water you use in your home, while its app keeps you updated on the recycling process and your total water usage. For showers, for dishes, for laundry, for the pool, whatever. Pre-orders are open now, starting at $4,000. The upfront cost is significant, but your bills will probably go down and your house will be a model of efficient living, one all the neighbors can envy.