Is your garden missing something? You might want to incorporate some garden art into it. Make a statement can bring everything together creating a conversation whether it is a fountain, gazing globe, or a homemade, personal item. I place something in one of the holes that were created by something that winterkilled.
If you want to add the sound of water in the garden, try a fountain or pond. This can vary from a small bubbling fountain to a large pond with a spray or waterfall.
Different types of plant containers are a cheap way of adding interest. If you have a fence, try window boxes. A simple galvanized container with plants and a small sculpture adds interest.
If you are doing DIYer, try old wagon wheels, antiques, and recycled objects. If you are crafty, try mosaic steppingstones and something made out of old tools or chicken wire. I have seen an old bedframe with climbing plants growing on it adding a focal point. I also like seeing an old window or door without glass seeing through the other side. Your imagination is your only limiting factor.
Sculptural pieces like rocks, statues, or concrete planting containers will give your garden a look of permanence.
Night lighting gives interest in the night. By lighting, a weeping tree will give a dramatic effect. By using different colors of light will take your eye from one place to another.
Do not forget about movement and sounds in the garden by using wind chimes and spinners. Stained glass brings colored light into a drab space.
Just stay away from that garden that has 20 different cheap, flashy, faded trinkets.
Just like shopping for plants, look for garden art that will complement your garden. Also, let it reflect your personality.