Pink foam board from Home Depot, cut to fit around fireplace. I duck taped it together (underneath as well). Then, I covered it with quilt batting (folded to form layers). Lastly, I got some cheap fabric from hobby lobby and hot glued it underneath.
Kidco Kidco Auto Close HearthGate Fireplace Safety Gate, Childproofing-Fireplace Safety, Kidco Auto Close HearthGate Fireplace Safety Gate, The Kidco AutoClose HearthGate Child Safety Gate helps you babyproof your fireplace.
If you have a small child running around then you already know a fireplace can be a safety hazard. Not the actual fire itself but the surrounding area made of brick (fireplace hearth) that juts out a few feet.
Chalkboard Fireplace cover - have plywood cut at HomeDepot to fit over the opening of fireplace. Paint Plywood with several coats of magnetic paint, then paint Plywood with a few coats of chalkboard paint.