I am a true believer in using a sound machine to help get a restful nights sleep. I use one in my room and in the kids room to help drown out all the distractions that can hinder me from getting the rest I need. I have been using white noise for a few years now and it does really make a difference.
On those nights when your mind is running about work, or all the events of the day a white noise machine can be a life saver. I also travel with one on my iPhone when I am on the road. There are multiple companies that produce sound machines, so check out the links above to find one that meets your budget and provides the sound that you need to get a good nights rest.