You can absolutely use lawn ornaments as statement pieces inside your home. Here I've used a large cement-poured horsehead lawn ornament that I picked up at an end-of-year sale and decided to put it right in front of my fireplace. It's a wonderful touch and adds a bit of spice and unexpectedness to the home. You can do this with any large lawn ornament, as long as it accents your current decor. The cat likes it, too!