I wanted to make a special cake this year, so I decided to create a sky cake with a message in the clouds. The cake is two 9" round cake pans stacked on top of each other.
To create a rainbow, I used colored sprinkles and sugar I had on hand. The blue frosting is aqua blue from Pillsbury. It comes already colored.
To give it a cloud effect, I wrote the words using a plastic bag. I just cut the tip off a corner of the sandwich bag. I piped on some clouds using the plastic bag as well.