Kids need cakes. You have to deal with it. There is no way you can simply not make a cake for your kid on their birthday. No way you are going to get away with it. It is just for your own sake, you know. Cakes work wonders.
But do not worry, you do not have to create a masterpiece. You do not really have to bake at all. You can simply buy a cake from store and decorate it yourself. Are you saying that you are not good at decorating? Here are some lazy tips on how to do it when you lack the talent.
1. Use sprinkles. You can perhaps create the number on the top with sprinkles and cookie cutter.
2. Make pandas with chocolate chips and sprinkles.
3. Make a Lego cake! Use your imagination.