To demonstrate to the children that doing an act of kindness can bring happiness to others
The children will experience doing an act of kindness for the parish.
If the weather does not cooperate to go outside, take the children into church and ask them to arrange the hymnals neatly in the pews and pick up any litter they find.
If your parish grounds are large, set a time frame for how long you want to do the project; target a specific area to complete.