Teach your choice of subject to children and adults, usually in the poorer section of society, in Schools, Orphanages, Social Care Centres, Crèches. Children’s Homes, and more, and always with the objective of helping the local community. You’ll benefit the children and also gain valuable skills and experience yourself. Your help is always appreciated because the schools generally have a lack of teachers, high illiteracy rates and poor funding.
Your main resource will be the fact that you're a foreigner. The children will bombard you with questions about your home town, your family, your school (or ex school) and they'll want to know all about famous places in your country.