One way to make a homemade air purifier is to use charcoal. Charcoal is known for its ability to absorb impurities and odors from the air, making it an ideal material for an air purifier. To make a charcoal air purifier, you will need: A container (such as a mason jar) with a lid Charcoal briquettes A piece of cloth or paper towel A rubber band Scissors Instructions: 1. Cut the cloth or paper towel into a square that will fit snugly over the opening of the container. 2. Place the square of cloth over the opening of the container and secure it in place with the rubber band. 3. Place the charcoal briquettes in the container. 4. Place the lid on the container. 5. Cut a few small holes in the lid for air to escape. To use the air purifier, simply place it in the room you wish to purify and allow it to do its job. The charcoal will absorb impurities and odors from the air, leaving your home smelling fresh and clean.