1. Trans-Disciplinary Research Cluster on Frugality Studies, Indian Hub at Jawaharlal Nehru University, New Delhi 110067, India; Leiden-Delft-Erasmus International Centre for Frugal Innovation, P.O. Box 29776, 2502 LT, The Hague, The Netherlands
2. Department of Mechanical Engineering, School of Agro and Rural Technology, Indian Institute of Technology Guwahati, North Guwahati, Assam 781351, India