They may look like fancy wind chimes, but these chains are silently doing something brilliant. They’re called Japanese rain chains or kusari-doi, and they’re turning rooftops into rain-harvesting marvels.

You may have seen them hanging from eaves if you have visited Kerala, where water gently streams down cup by cup during a downpour. They’re not just placed for aesthetic purposes but to harvest rainwater, thus a step closer to sustainability.

So why chains instead of old pipes?

It is no secret that pipes are practical, but they’re high-maintenance. They get clogged with leaves, breed moss and mold, and are a pain to clean. Ever had a rainwater pipe leak inside your wall? That is no less than a nightmare!

Rain chains solve that. There are no........

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