InstaGood’s whale-shaped RVMs bring playful sustainability to Chennai’s Marina

Chennai-based InstaGood is reimagining public participation in plastic waste management with a fleet of whale- and fish-shaped reverse vending machines (RVMs) installed along Marina Beach. The initiative blends design, technology and behavioural nudges to address PET bottle litter in one of India’s busiest beachfronts.

Branded “InstaBin”, the machines are designed to resemble marine life, encouraging users to ‘feed’ a whale by depositing used PET bottles. In return, the machine dispenses a reusable cloth bag—an incentive aimed at promoting both recycling and alternatives to single-use plastic. The first unit became operational on 6 April near the Marina swimming pool, with additional whale-shaped machines and six fish variants being deployed across the Lighthouse–Anna Memorial stretch.

The concept builds on InstaGood’s earlier “Meendum Manjapai” automated cloth bag dispensers and lessons learnt from prior RVM pilots. “We wanted to create an Indian version of reverse vending machines where people do not have to pay, while also addressing misuse such as non-recyclable objects being inserted,” says Krishnna Priyadarshini Elanchezhian, CEO, InstaGood.

The machines are engineered to accept various inputs but only reward PET bottles, verified through an internal mechanism. To prevent misuse, such as users collecting multiple bags, the system has been programmed with a time delay between successive rewards. Each unit can dispense up to 500 cloth bags per day, depending on capacity.

Corporate partnerships are helping scale the model. Banking software firm Temenos has sponsored multiple installations across Chennai as part of its CSR initiatives. The Greater Chennai Corporation has also awarded a tender for nine machines at Marina Beach, signalling growing institutional support.

From an operational standpoint, the IoT-enabled machines are equipped with cameras to capture real-time data, reducing the need for manual supervision. Collected PET bottles are transported to InstaGood’s facility, where they are segregated into caps, labels and bottles to enhance recycling value.

Looking ahead, InstaGood plans to integrate digital reward systems, enabling users to earn redeemable eco-points. The company believes such interventions can strengthen consumer engagement while advancing circularity in urban packaging waste streams.