For her Manhattan living room, Nina Garcia selected a 1940s French daybed that could just as easily be used as a twin. Björn Wallander Left: Siggy Trundle Daybed, $304; jossandmain.com .

Target has a twin-sized sofa that converts to a king bed. Skip to Article. ... Costway’s Twin to King Daybed is on sale for $279.99, a savings of $480 off the regular price of $759.99.