The COVID-19 pandemic boosted food delivery service (FDS) usage, causing unsustainable habits and environmental concerns. This study aims to develop a behavioural change intervention to promote sustainability-oriented motivations. The intervention involved the use of a bingo board to set and track goals for alternative behaviours. The intervention showed a reduction in FDS use frequency and an improvement in participants' sustainability awareness. The bingo board provided a sense of accomplishment and satisfaction, acting as reinforcement, while the bonus response cost served as both a reinforcement and a punishment. This study provides insights into the need for developing design-led interventions for promoting sustainable behaviours.