U.K.-based Briiv has claimed to have created the world’s most sustainable air purifier. The design features a natural, compostable air filter made from the micro-structures of renewable materials, giving it the purifying power of 3,043 medium-sized houseplants. The air purifier requires almost no maintenance, so busy or traveling owners don’t have to worry about watering or trimming like regular houseplants. Everyday, tiny particles and harmful gases are released into our homes through things like cooking, lighting fireplaces, using cleaning products and playing with pets.