Ok, so its not quite as easy as the chalkboard...but still very do-able in a weekend.
This mantle headboard is something I did about a year ago. At the suggestion of Heather of Pretty Petals , I've decided to make this the next weekend project.
First, find your mantel (or is it mantle ?). Mine was only 40.00 at a local flea market and was already stripped of most of its peeling paint.

Next, a piece of 1/2 inch plywood was cut to fit the opening. I used a spray adhesive to attach a piece of 2" foam and covered that with a piece of muslin and batting.
Now the fun part...picking out your fabric. Mine was originally done in a cabbage rose barkcloth, but, I was ready for a change. So, I recovered it today in another lovely vintage piece from my stash.Center your design, fold over edges (so you are stapling through a double layer of fabric) and staple to the back. (start in the center of opposite sides and work toward the corners) 
To avoid having to screw through the fabric, we simply "wedged" the fabric panel into the mantel opening. We did this by partially inserting 2 screws in the top and 2 directly beneath the panel.
This also makes it much easier to change out the fabric whenever you like.
To avoid having to screw through the fabric, we simply "wedged" the fabric panel into the mantel opening. We did this by partially inserting 2 screws in the top and 2 directly beneath the panel.




Then several light coats of Chalkboard spraypaint. Helpful hints: Wear a latex glove, I still have a black fingernail. And choose your outside location carefully (see photo below).
After the paint has dried, place in frame and secure with picture tacks. Mine was one of those old magazine holders?? that hinged open. But since it was broken, I simply removed the hinges and screwed it closed from the backside. If I need to repaint or if I want to replace the chalkboard with a piece of fabric in the future, its easy enough to undo.
To hang, I inserted 2 eye-screws (screws with little circle tops) and I threaded a long, skinny piece of fabric through the holes and tied in a bow.I have mine hanging on the wall of my dining room. My hubby and I can leave each other messages, write our To Do or Grocery list, or display a favorite scripture for the week.




