Hey Bach man,
A thought for a new On30 Dated Christmas car(s) for 2010.
How about a high side gondola with a resin load of bagged reindeer food.
or a reefer for perishable fruits/fruitcake/poinsettias. Or the ol' flat car for the Santa's sleigh(included) to go with the reindeer transport car.
If you can't tell... I love the dated Christmas stuff.
I, too, like the Christmas cars and while I don't have a specific suggestion I like yours and certainly hope some new item(s) will be available for 2010.
Ned