There are many towel racks that you can buy in home improvement stores. Some are made of metal, some of wood, and others of plastic. Most of these are very affordable too.
But because you’re not a typical homeowner, you’re looking for something out of the ordinary to use for hanging your towels. You’ll probably love this idea from Funky Junk Interiors that makes use of an old ladder. You just have to paint it with black, and then put a potted plant at the bottom part for a nice touch.