[7] Offerings of bananas, coconuts, oil lamps, meat, and alcohol are routinely left at these shrines to ensure the health and safety of the village.
[8] As a result of countless Tamils falling into the British Raj's indenture system, these shrines have spread throughout the Indian diaspora.
[9] In Kerala, each family home complex (for Nairs and Ezhavas), known as a tharavadu, has a spirit house located towards the northeast corner.
Known as "kavu" or "sarpa kavukal," these shrines consist of a small grove with symbolic houses and carved stone effigies of guardian nagas, and other "gods, spirits, yakshi, [or] ancestors.
"[10] The Malayali people traditionally believe that the construction and maintenance of these sacred shrines keeps tutelary spirits docile and can even serve as atonement for "angry serpent gods [who were]... left unattended.
"[11] Spirits of the kavu are most commonly offered "raw rice, unbroken coconut fruits, betel leaves, and areca nut," as well as an "oil lamp in front of the deity at dusk.
"[12][13] Occasionally, these kavu serve as locations for shamanistic rituals known as "pampin kalam" where mediums channel the deities and perform sacred rites around hand-drawn mandalas made from coloured powder.