Any suggestions for a filling for the Chai spice cake?

Caramel (dulce de leche), cinnamon buttercream, apple filling, cream cheese frosting, raspberry filling, I think that all of these or a combination would be great!

I've used a white chocolate buttercream- delicious. Also have used creamcheese. I think something with cinnamon would be great.

A pumpkin filling would be great for this time of year. For Christmas, may I suggest an egg nog filling. Both go great with Chai! Also, just a good, old fashioned vanilla filling would be great for year round.