ECC should have holiday packages that are free of charge on the store, For example: Christmas Package, 1 Christmas color dyed leather armor set, a book giving Christmas wishes and stuff and some other things. If this can't be done due to religious purposes there could always just be a holiday package. Overall this could be done for things like Easter, Halloween and other festive occasions.
Honestly I don't really like the idea of just "free" holiday items. What's the point? Stuff you get from event participation/winning is a lot cooler imho, and it gets people involved in the community a little.