I am not a water connoisseur. But for those of you who are, check out the Eau Good water bottle from the Anglo-Swiss outfit, black + blum. It uses Binchotan-active charcoal – also known as white charcoal – to purify tap water and make it taste better. The charcoal from Japan has a porous surface that allows it to absorb chemicals (like chlorine), smells, and pollutants, while releasing minerals to balance the pH. After six months in the bottle, the charcoal has other applications. Use it as an odour-absorber in cat litter, laundry baskets, shoes. Crumble it into your potted-plants for mineral nutrition. Or use it as a humidity-absorber in wardrobes.