What ages are you working with?
You might find some good things in The Public Life of Our Lord Jesus Christ - it really made things personal for me.
Or similarly work on showing the relative distances Christ walked, where things were, etc. So for example, Bethlehem is only like 5 miles from Jerusalem, you can show that on a map of your city.
Or if you like the OT work on typology for the sacraments from it (circumcision into baptism, marriage into marriage, the todah into the Mass, etc).
The Public Life of Our Lord Jesus Christ: An Interpretation is really good and moderately obscure (originally printed in the 40s).
You could also get him a biretta. (Not a Beretta.)
This book isn't specifically about Advent but it is really good.