look at the festival and make oil lamps
Ramekins or jam jars, t lights, glass paints
Explain the festival and how it celebrates the fight of Good/Evil & Light over Dark.
Read or watch the story.
Make a light by decorating the glass.
Think about Diwali as New Year for Hindus - they spring clean ready. So clean some of the meeting place.
Light lamps as part of a Scouts own at the end.
Think of contrast when we lit lamps for Remembrance.
Allow the scouts to take lights home.
For Cubs create a bridge as in the story from spaghetti and marshmallows or jelly babies.