Some examples from one of our classrooms: The children thought of giving their teacher a surprise birthday party. They made a poster, found someone to make a cake, made confetti, etc. Another example: The children have been taught a lot about music, both theory and practice, and they have a number of instruments to practice on. They will then spontaneously get together to play duets and compose songs. This is all without any adult suggestion. In short, their motivation, interest, desire and energy all combine to make for motivated, enthusiastic learners.
Meher's Upper Elementary children made special projects about subjects of interest. These were then displayed on the walls and shown to parents during the Breakfast event.