We have old islamic lecture video and audio cassettes that the person talking in them mentions Allah and Muhammed SAW name and Quranic ayaahs. No one really uses cassette players any more and they don't come in cars either. What can we do with the cassettes? Do we have to keep and save them forever or can we recycle them? If we recycle them they make other things out of recycled material like toilet paper. We cannot throw them in bodies of water here. How can we handle them?