Yantra
Yantra (यन्त्र) is the Sanskrit word for a mystical diagram, especially diagrams from the age old traditions of India's traditions and Vedas.
Yantra are especially useful for people who cannot recite or chant Mantras, They are used for worship of deities in temples or at home; as an aid in meditation.
While focusing on a yantra, individuals seek to awaken and channel the energies represented by the symbol. Yantras are believed to have the ability to influence subtle energies, bring harmony, and facilitate spiritual growth. They are revered as powerful instruments for manifesting desires, attaining spiritual goals, and establishing a deeper connection with the divine.