My latest cake is of Cookie Monster, done for a 1 year old named Samuel. The main part of the cake is homemade chocolate cake with vanilla butter cream frosting and covered in vanilla fondant (I use Satin-Ice fondant).
Cookie Monster is made of chocolate cake (the middle) and his head, arms and legs are rice krispie treats. The chocolate chip cookies are also from scratch (not Toll house recipe, but my own). I used a grass tip to get the look of fur on Cookie and used fondant balls for the eyes. I had to use quite a bit of blue food coloring to get the right blue. But for primary colors like these, I usually make the frosting ahead of time, as the color will get deeper with time.