A living room without end tables just feels incomplete, and they seem so simple, right? Stick a couple of tables on either side of a couch or mattress and you’re done. Who knew there were so many color and style choices? Today’s decorators have less allegiance to the rule that everything in the room has to match the same style and color and pattern, and many like to change things up by using different pieces that still complement each other. To get it right, start with understanding how size and shape matters in each room, and the stylistic and functional considerations you’ll have to decide before you buy.