Minecraft wiki entry for Furniture, associated text: A nice design is a brick outline in the wall and floor (slabs can make the area around it on the floor elevated). Then make a 1×2×1 hole in the wall inside the brick outline and put in a campfire/netherrack. Light the netherrack (if going with this option), and add a chimney for all the smoke to go out through (and it's also an outside decoration!) A more contemporary and "sleek" design is to make the same brick outline but with lava inside, and put glass in front of the lava, making for an ultra-modern, "artificial fireplace" feel. Iron bars can be added around the fire to look like a fire guard for a more realistic look.