I know it seems rather early but there are some good Christmas resources for churches over at SGMLifewords. Have a look at the audio visual stuff as well as the crafty creations for children including a finger puppet nativity. Don't miss out seeing the liturgy including some great Advent/Christmas themed prayer stations.
There are some other resources here:
Pesterpower leaflet for families at Christmas.
Some ideas from "downunder"
Lots of ideas from over the years at rejesus.
more as I get them!