What is your potential?
Show the John Lewis advert ‘Growing Up’. Briefly consider what people like and dislike about it. Invite people to think about what they would like the next stage in their own lives to be (for children you might want to phrase this carefully). Invite people to discuss this a bit with their neighbours. Then invite people to say together the words of John 12.26.
Plant vegetables
Agricultural metaphors don't work very well if you have no experience of growing things, so invite some gardeners to lead an experiment. You can grow vegetables very easily in buckets and storage boxes (even in old boots!). Plant a variety of roots and seeds today, put someone in charge of watering and watch the results.