I’ve opened up a flickr group for anyone who feels like playing with photoshop. You can grab a transparent image off of the Flying Cupcake-inator page (it’s already cleaned up so making your own image should be, er, well cake!) upload it to your flickr account and then join the flying cupcake group/add to the pool.
Just do me a favor and keep it clean, there may be children swimming in there. Where will you find a flying cupcake?