Glass block is a versatile material that can be used for a variety of purposes. You can use glass block to add light and illusions of space to a walk-in shower. They also work well as windows since they let light in while blurring the view from the outdoors. Other more nontraditional uses for glass block include crafts to display lights, flowers, or pictures. You can even use glass block to add unique accents to your garden by building a wall with the block.