Maybe one can't argue for efficiency in this case, but glass carafes (especially this one, with its ever-elegant natural water filter) evoke a sense of calm and point directly to thoughtful, intentional design. Simply looking at this piece that embodies form and function makes us breathe a little more deeply.
This hand-made, mouth-blown glass carafe from Mjölk comes with a piece of water-filtering coal (white coal, or Kishu Binchotan, which is made by heating a piece of Japanese oak in a kiln), which soaks up chlorine from tap water and filters good minerals into the drinking water.
Find it: Glass carafe & Kishu Binchotan (coal) at Mjölk, $125
• Green Style: John & Juli of Mjölk
• The Binchotan Coal Water Purifier
• Bamboo Charcoal Deodorizer by Kyoshi Nishio
• Japanese White Charcoal by Sort of Coal