My friend just bought a plane white cake and added her own decorationa snd writing and it was curious george themed with bananas
If ur crafty get the cake and go to the dollar store which sells tons of baby trinkets for decor small plastic pacifier shoes &bottles and get some decor tubes for cake decorating from the grocery and some nice curly streamers n such & decorate u can even have them make &write on ur cake & buy ur own decorations dollar /party store.
Cup cakes! :) or cookies maybe... if I may ask why are they not able to make the cake?