Yantra are mystical diagrams composed of sacred geometry, symbols of cosmic unity. yantra are used to withdraw consciousness from the outer world, and go beyond the normal framework of mind to a state of consciousness known as Turiya. 
It is considered as incarnation of Bhagwan Shiva. The person who wears Rudraksha possess always good health, is respected by all and is capable of attracting everybody ,it is a very important & ystical bead of Hindu Mythology .
Feng Shui is the art of living in harmony with your physical surroundings. An ancient Chinese philosophy, the term "feng shui" means "wind and water". The Chinese felt that people who lived with "feng shui" were much more likely to be happy and prosperous.
It is a tool used to keep your mind on the meditation practice. Malas are generally made from different materials such as tulsi (basil) wood, sandal wood, rudraksh seeds or crystal.The mala beads are moved in rhythm with the breath and the mantra,
The beauty and power of crystals and other stones have long been recognized, from the ancient times of Tutankhamen to the modern masterpieces of Cartier and Faberge.
They have always been prized for their beauty and their healing and spiritual properties.
Worship of parad shivling destroys sins and punyas arise whereby one is enabled to be free from sorrows and strives diseases and calamities. Dedicated worship of parad shivling takes one toward divinity and spritualty.