Close the top on four 18-inch square boxes, while leaving one flap open.
Stack one box on top of another with the flaps opening to one side and tape the boxes together with masking tape.
Repeat Step 2 on the other two boxes.
Tape the flaps of the boxes together. From the top, the boxes look like a staple with the boxes themselves acting as the legs and the flaps that have been taped together connecting them. This is the hearth of the fireplace.
Mix red acrylic paint with a small amount of black acrylic paint on a paper plate
Use a rectangular sponge to put “bricks” on the boxes with the paint you mixed. Stamp the boxes using the sponge to create regular rows of bricks.
Tape two garment boxes together end to end. This is the mantel, which rests across the top of the hearth.
Paint the garment boxes a flat gray.
Secure the garment boxes across the top of the hearth with tape.
Push the fireplace display against the wall.