From ancient days people in India worshiped or kept in place of worship many items recommended in the ancient scriptures as holy items. Bellow is a list of the authentic holy items recommended in the Indian Vedic scriptures.
According to the scriptures Lord Shiva opened His eyes after a long period of meditation and because of the cold Himalayan wing His eyes smarted and a few tears fell down on the himalayan region. Wherever the tears fell the Rudraksha trees were born hence the Rudrakshas, the beads of the tree are considered holy. They have spiritual and medicinal properties. You can read all about the Rudrakshas and order one from here
The Saligramas are ancient stones found in the Gandaki river at Damodar Kund / Muktinath Nepal. Many scriptures have hailed it as an incarnation of lord Vishnu and have recommended their pooja as highly beneficial. it is one of the 5 holy stones used in the Panchayatan pooja representing the Akasha or Space element and Lord Vishnu. You can read all about the Saligramas and order one from here
The Narmada Shivalinga, also called Narmadeswar Shivalinga and Banalinga, is a stone found in the Narmada river near the holy Omkareshwar Jyotirlinga. The scriptures recommend that its worship as shivalinga is highly auspicious. It is kept in the pooja place and it is one of the 5 holy stones used in the Panchayatan pooja representing the Earth or Vayu element and Lord Shiva. You can read all about the Narmada linga and order one from here
During the Ksheerasagar Manthan by Devatas and Rakshasas (churning of the ocean by Gods and demons) Goddess Lakshmi came up along with Moon and Shankha. Hence the worship of Shankha, keeping it at pooja place and blowing it are recommended as highly auspicious by the scriptures. You can read all about the Shankas and order one from here
The Swarna Mukhi stone is found in the Swarnamukhi river near the holy Srikalahasti in Andhra Pradesh and represents the Agni or Fire element and Devi and kept in Pachayatana Pooja and hence is highly recommended for worship in the scriptures. You can read more about it and order one from here
The Ganesha red Sonabhadra river Shila represents the Jala or Water element and is one of the 5 holy stones used in the Panchayatana Pooja of Ganapati. You can read more about it and order one from here
The Crystal stones found at Vallam represents the Vayu or Air element and is used for Surya worship in the Panchayatana Pooja. You can read more about it and order one from here