A headboard is defined as a piece of furniture that is attached to the head of a bed. If you have a king size bed then you need to choose the right headboard. You could pick from a variety of options, from mirrors to paintings, and even doors. If functionality plays an important role in every bedroom furniture that you have picked, then extend this to the headboard as well. Use headboard designs that serve multiple utilities at once. Attach a row of tiny lamps to the headboard and use them as a nighttime reading lamp. Alternatively use a book shelf as your headboard that can be used to store knickknacks as well.
Another factor that will play an important role while choosing headboard for a king size bed is your budget. If you have vast amounts of money at your disposal, then you can choose from the best stores and hire the best decorators to help you with your task. But in case budgeting is important, then you can scour garage sales and second-hand stores. Haunt auctions, and chances are you will find a headboard that you absolutely adore. Also, a tight budget will force you to think out-of-the-box and come up with unique designs.