Running an fan through the middle to blow air up the pipes would help it radiate out. Bend the pipes around a 55 gallon barrel and make a rocket style insulation around it with sand and plaster. Place some sort of central blower to control speed of air
How to Make Moss Graffiti. As people become more eco-friendly and environmentally aware, the idea of making living, breathing graffiti has become an exciting outlet for graffiti artists. Also called eco-graffiti or green graffiti, moss.