Filling ideas for rice cakes- lets be creative!

So, I want to make some new and different rice cakes (Gyungdan). I live in Korea so I get the standard ones a lot… I want to add an international touch to them.

I’ve tried:

a peanut butter+powdered sugar mix (to make it less sticky) rolled in blended peanuts

a chocolate frosting like mixture rolled in coco powder + powdered sugar (but these didn’t turn out well, the chocolate was too runny and the coco didn’t absorb the water from the cooking process so they stayed sticky)

I am going to try a creamy cheese filling, but I’m not sure what to put with it… nuts? honey? I was thinking something with a touch of lemon or lemon zest, or what about ginger?

Anyone else have any other ideas? I’ve thought about trying savory rice cakes (something spicy?) but I don’t think Koreans would like them because rice cakes are supposed to be sweet…

Thanks for your help!