In a narrow but crowded street in Villivakkam, I was amused to see these lamps being sold. I have seen these during my childhood in areas where electricity had not reached. We called them ‘Kozhi muttai villakku’ (egg shaped lamps) . These were used for light duty in small rooms and for carrying between rooms. I had not seen them for quite sometime.
What was more interesting was that the bodies were made out of upcycled (repurposed) tin sheets. I hope organisations like www.golisodastore.com which specialize in Upcycled products, stock such items.