Cakes Unique

Is there a way to make the box cakes unique and better?

Anyone can make the pre-made cake boxes but I was wondering if there was a better way to make them by adding an ingredient or something so people would think mine is better/different.

Oh yeah. My son's favorite Sour Cream Chocolate Cake 1 pkg chocolate cake mix 1 small pkg instant chocolate pudding 12 oz. pkg chocolate chips 4 eggs 1/2 cup water 8 oz sour cream (keeps the cake moist) 1/2 c. veg oil Mix 'em all up. Pour into a greased bundt cake pan. Bake at 350 degrees for 50-60 minutes (do the toothpick test if you need to) Tis good and moist. Add vanilla yogurt to white or yellow cake mixes, also. Try it, you'll like it.