Sensory: Use soft foam tiles for a sensory room/area floor! The faux-wood can be more calming than loud colors and is also more "adult-looking" for a sensory room teens and adults will be using. http://www.foamtiles.com/tiles/38-soft-wood-tiles.html
Mirror, On The Wall - It's got nothing to do with vanity. Hanging a mirror on the wall of your home gym will allow you to check your form as you lift weights, so you can keep a proper posture. A mirror also can brighten up a small space, and, of course, help you track your progress.