The kids, Archie, Linus, and Olive, stand in the kitchen, beneath the strand board–clad stairwell that leads to the bedrooms. Kerr and Ritchie initially envisaged rich materials for the interior, but changed their minds in favor of what they call a “cartoony” approach with cheaper, hard-wearing elements. “We didn’t want the space to feel too grown-up,” Kerr says.  Photo 5 of 12 in Nature Nurtured