Damaris Trust is a wonderful organization that creates resources for evangelism. Their goal is to relate the Bible message to popular culture, including using movies to explore the theme of redemption.
This year, Damaris have once again received permission to use snippets from the British film Nativity! Using this as a starting point, they have created ideas for a primary school Christmas season assembly.
When you visit the Christmas assembly page you can click to open up the elements you wish to use and have a PDF made of those parts.
There is also a PowerPoint presentation to use and ideas for drama, singing and a time of reflection.
To view the Damaris suggestions and pick up the PowerPoint, visit the Collective worship for Christmas page.
You may also find these free Christmas resources of ours to be helpful.