Most people, when they purchase a bedroom set, they get the whole kit and kaboodle, including the matching bedside tables. This isn't necessary. Not only is it unnecessary, but it's not always space efficient. I see a lot of small spaces that can't always accommodate the typical bedside table.
Here are a few alternatives for you to consider. As you can see, it's easy to re-purpose furniture found around your home, to serve as a night stand in your bedroom.