Boy or girl?
For the most part, baby shower and gender reveal cakes are pretty similar. The biggest difference comes into play when the cake itself is the gender reveal. In that case, the color of the cake or filling is the reveal. If the gender is being revealed by a different means, like opening a box of balloons or opening confetti poppers, the cake is just another opportunity to play into your party theme like any other baby shower.
For cakes that are revealing the gender, popular ideas include: pink or blue candy fillings, cake coloring or colored sprinkles baked into the cake.