Minecraft wiki entry for Furniture, associated text: Another modern way is to have a wall with stairs on all of the bottom row of blocks but the corners, and place glowstone in the corners. Then place one more stair piece next to the glowstone to make an 8×8 pixel square of glowstone. Lastly, place a half slab of the same type of the stair (wood plank, cobblestone, stone brick, sandstone) on the glowstone. There you have a modern 'glowing' couch piece. I recommend either stone brick (modern) or sandstone (blends in with glowstone).