With only 700 made, the Soma Black ($100) water filter might be the hottest gift this holiday season. Not just from the allure of collecting something limited, but because of what comes with the result of owning one. For each Soma Black sold, $15 will be donated to charity: water to help fund safe drinking water to people in Cambodia. And if that doesn’t convince you, Soma is also giving out unique codes that you can redeem a special gift from one of their favorite brands. You can win anything from a Solé Bicycle to a Fiberglass Eames Armchair.