For a family with three kids, Hay fashioned a custom tree-like shelving unit that connects to a curvaceous, built-in sofa—ideal for lounging and reading. Yellow accents brighten up the restrained wooden palette.  Photo 2 of 13 in How to Design a Room That Grows Up With Your Kids

How to Design a Room That Grows Up With Your Kids

2 of 13

For a family with three kids, Hay fashioned a custom shelving unit that connects to a curvaceous, built-in sofa. Yellow accents brighten up the restrained wooden palette.