just a piece of plywood, some fabric (you could get it monogramed somewhere I know Mary Anns does it), some batting, and staple gun! Not too expensive maybe a little time consuming.
Build a simple, temporary headboard.
upholster the box spring instead of using a bed skirt.
Home Decor Ideas: 35 Headboard Ideas
34 DIY headboard ideas
There are so many things you can do with paints and stains. I've been looking for an inexpensive headboard and I love the idea of a chalkboard headboard that you can leave sweet messages to your partner on. -Onyx
20 Ideas for Making Your Own Headboard | The New Home Ec LOVE this headboard from a door. Can I put another bed in the house? In the dining room? We'll all just sit on it and eat and it would be cool because of this awesome headboard.
Fabric Headboards: DIY vs. Professional
Currently Jamming to: “How Soon is Now” by The Smiths I have seen so many great projects lately around the web featuring DIY custom upholstered headboards. These look great, and can be made very cheaply... Read More
How to make an upholstered headboard with a dropcloth! This is great!
Now this is something i would do. Upholstery an old door for a head board to your bed!
51 DIY Headboard Ideas to Make The Bed of Your Dreams - Snappy Pixels