Take a story like the story of freedom at the Passover seder--a remembrance of the story of the exodus of the Jews from Egypt. Some stick with the traditional story each year, learning more about the symbols and the story each year, and it is a tradition that keeps on growing.
Or add some history from then and now, some stories, some parallels and some other symbols of life and freedom, and you have another tradition that is ever growing.
This year, just being able to find the traditional foods eaten at the sedar at stores in the area became part of the challenge of telling the story. The current economic challenges apparently had an impact on food production, and we cannot take anything for granted.
At this self-led, participatory ceremony that goes back many years, we are reminded of new and old challenges. We look ahead to next year and what will be new--nu?