I've seen cheesecakes made multiple colors, that might be festive?
Decorations and even frosting are do-able.
I love cheesecake. There used to be a bakery here in town, next door to the supermarket, and once in a while, Dh would bring me a piece.
When they closed, I would make them now and then. Regular, and chocolate. I see no reason why you couldn't make one into a birthday cake. Either by making one fancy, or making a cheesecake layer to a cake. I've seen it done, but have never tasted nor made it myself.
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