Here's one activity I've come up with--though I must admit it wasn't my idea. One of my colleagues created a mystery in Neighborhood Maps, and I had difficulty opening it and making it easy for the students to open, so I created my own. Here's a map I made of Santa's Village at the North Pole.
Neighborhood maps takes the students through a mystery, giving clues at many of the stops throughout the map, till they find Santa and Jimmy's yellow bike. At the end of the mystery, the children can link to a site with tons of Christmas stories they can read.
Enjoy!