(Green-tech found new prominence at this year’s CES, and one of the best products was Hydraloop’s Water Recycler. “The large appliance, which filters and purifies grey water from baths, showers, and washing machines, employs a series of six maintenance-free filtration techniques, and can recycle up to 85% of the water used in the home for re-use in toilets, pools, and irrigation systems (your toilet and kitchen sink are safe from filtration, so don’t fret),” writes a reviewer from Time Magazine.