Why not celebrate a Thanksgiving service on New Year's Eve within a multigenerational circle, or hold a harvest festival service where different age groups contribute? Or a successful pilgrimage involving grandparents and grandchildren could culminate in a jointly designed mass. There are many occasions where the idea of generations can be effectively embraced. Children, teenagers, women and men, seniors - they all are part of one worship community. This makes it all the more important to involve various age groups in the preparation and design of the celebrations. The 30 models and building blocks are oriented around the church year as well as themes related to family and community. They are a treasure trove of inspiration for anyone seeking contemporary liturgical forms in a time of pastoral change.