We gave a pair of designers with very different styles one day to transform the same IKEA Billy bookcase, turning one of the most popular furniture items in the world into something more personalized and expressive. Drew Scott of Lone Fox is a DIY dynamo who emphasizes attainability with an eclectic twist, while furniture designer Leonard Bessemer of Objects for Objects approaches his work through a lens of sculpture and indulgence. Whose IKEA hack would fit most comfortably in your home?