I've wanted the below since spending some time in a small town in Italy, where every balcony has something like this. We have an elevated deck around the back of our house and minimal yard so this kind of thing worked perfectly. It has four lines next to each other and fits almost two loads, so I'm thinking of extending it to the full length of the deck.
I just bought metal brackets from the hardware store with holes in them, attached to the deck posts, and ran lines through it. I've line dried indoors for years but it's amazing how much faster it goes outside! And many less wrinkles because the wind gets them out. I just put whites/lights out during the day and darks/ colors in the late afternoon or evening so they don't fade.
I just wanted to share my little project with people who would appreciate such a thing! What does your drying rack look like?