Talk with your parish priest about setting up a teaching Mass for children and their parents. You may want to consider using the Chapel for a smaller setting. You could offer to help the celebrant by identifying the items at the time of their use during the Mass. Perhaps beforehand the priest could explain the vestments and the seasonal color being used. This would enable parents and children to be more involved during future liturgical celebrations.
Use may also choose to share and use the Tour of a Catholic Church video provided on this website.