It is an on-the-work learning with observer who makes a shadow to the worker or volunteer. Organizations use it as an effective tool for learning on both sides. You can also try some kind of work of a volunteer. This experience is for free.
You can offer a local guiding to other young people who travel nearby. You can take them to spots you like. They usually travel for international mobility learning projects (Erasmus+) or volunteering projects (European Solidarity Corps).
You can help to other young people and offer them place to stay. It can be for one night or more nights. You can exchange many ideas and learn from each other. They usually travel for international mobility learning projects (Erasmus+) or volunteering projects (European Solidarity Corps).