Quickly approaching their thirties, a lot of my friends are buying nice furniture (that don't require an Allen wrench to assemble) for the first time in their lives. These coasters by Alexander Wang are a thoughtful but elegant way to help them preserve those pieces through to the next decade. Their utter practicality is disguised by the marble: a Diet Coke or Heineken on one of these slabs looks like an artful still life. $170; alexanderwang.com.