Are you looking for volunteer ideas for service. Here is an article published in Lisboa Secreto that identifies multiple organizations that are looking for volunteers. Some may have specific requirements such as that you must be 18 years old, but you can contact any organization that looks interesting to you and ask. Remember that these projects are all about serving the community, to address identified and authentic needs, but additionally, you want to be able to develop your life-skills and become a happy, healthy, contributing member of society, and that starts with the Learning Objectives.
So take a look and see if there´s anything that you would be interested in. In the Parent and supervisor guides, you can find information to share with them to explain what CAS is and how it contributes to your personal development and your academic success.
If you find one that you choose to pursue, please let me know. it might be a contact for future groups of students.