To What Shall I Compare the Kingdom of God?

Jesus used parables to explain the Kingdom of God to his disciples to help them understand supernatural truths by relating them to everyday occurrences. So what would a modern-day parable look like?
Maybe it would involve a backpack, lost in a field, that is finally restored after much searching and anxiety. Perhaps there is more joy in finding one lost backpack than in having 99 at hand.
Snippet from the Show
“When Jesus taught about the Kingdom of God, he used familiar things.”