Organise a talk, seminar or lecture from an expert on a sustainability-related topic. You may arrange a session with one speaker, which is suitable for hour-long engagements or lunch-time and tea-time talks. These speakers may be subject experts from an educational field, or they could also be founders of sustainable brands who can speak about and introduce their products and services.
You may also choose to arrange multiple speakers as part of a programme. This is suitable for half to full day activities, or a recurring time slot throughout the week or month.