Great for: Your parents. The ultimate living-room workhorse, this classic says to Mom, "I am all grown-up and have inherited your practical streak." With a 5 1/2-inch-thick queen-size innerspring mattress under plush cushions, it also says, "We want you to sleep through Junior's early-morning cartoons." It's available slipcovered or upholstered, with hundreds of fabric, leather, and color options (shown in washable cotton in Sonora Cloud).
To buy: Alex III Collection Slipcovered Queen Sleeper by Mitchell Gold + Bob Williams (couch is 36 by 79 by 34 inches), starts at $2,630, mgandbw.com for stores.