Perhaps you prefer something with a lot of sculptural qualities? There are a large number of styles that could allow you to add texture, sound, and light to any part of a room. For instance, you could request a customized fountain that used different types of metal to create a very textured surface for the water to pass over. This would be a great way to dress up a wall or to even serve as a calming or soothing feature in an office or waiting room.