Fixed into holes in a corrugated iron roof, the "bulb" is a recycled plastic bottle that contains bleached water.

CNN: Plastic bottles light up lives

Measuring 8ft by 8ft and in need of some repair, the blue-painted wooden shed has a simple corrugated iron roof.

BBC: Abersoch beach hut

The hut stood on its own patch of land, which was walled off by stakes, stones brought from the shore of Lake Onega and piled up haphazardly, and rusty sheets of roof iron, probably carried here from some distant town by a gale.

NEWYORKER: Among Animals and Plants

The roof was iron, and it looked to be sound, though storm-dented and running with rust.

NEWYORKER: Idols

For larger roof spans, Mr Agarwal often uses galvanised iron, which he says can work out as cheaply as asbestos.

BBC: News Online