A yantra is a geometric diagram used in Hindu and Buddhist traditions, often serving as a tool for meditation and spiritual practice. Typically made of intricate patterns, yantras represent various deities and cosmic principles, helping practitioners focus their minds and intentions during rituals. In addition to their spiritual significance, yantras are also believed to harness specific energies and promote harmony in the environment. They can be drawn, painted, or crafted in various materials, and are often placed in homes or temples to invite positive energy and protection.