Inspired by fresh sea air, Tom Dixon's 'Water' scent blends Watermelon with Cedar Wood and Amber Musk to achieve "a cool and sharp maritime saltiness." It's housed in a smoked glass jar that takes cues from those found in laboratories and has a charcoal stick instead of traditional reeds - turn it around frequently so it diffuses steadily. Set it atop your hallway credenza, so guests are greeted by the uplifting fragrance when they arrive.