Open concepts are starting to fall out of style, but not in the way you might expect. Closed-off rooms aren't the only alternative to an open floor plan. Instead, consider a piece of retro furniture that can strike a balance between the two types of layouts. While the room divider is an age-old concept, the '60s reinterpreted this simple furniture piece with a funky twist. Crafted from solid wood with playful, geometric lines and patterns, these retro room dividers are both fun and functional.