In Western Australia ("WA"), teachers are required to undertake 100 hours of professional learning (PL) to maintain their registration. REmida WA Creative Reuse Centre offers Reggio-inspired "100 Languages" workshops as part of its PL programme, thus enabling interested teachers to attain the necessary hours. The purpose of this research is to help REmida WA identify the needs and interests of their clientele so they may design relevant educational experiences that accommodate clients' professional learning goals. This mixed-methods study examines teachers' motivation to attend REmida WA's "100 Languages" workshop. One hundred teacher participants from across all education sectors were asked to identify their interest in REmida PL and how REmida supports their learning programmes. Findings show that teachers view REmida WA as an organisation that helps them to learn about and better understand "Education for Sustainability" ("EfS") and creative pedagogies. REmida is also valued as a source of open-ended materials for resources that can support children's learning about sustainability.