Try here they have a lot. Hope this is what you are looking for Suzanne
http://cheryl.thisbe.org/Patterns.html#organizer

Here is one with cats, don't know if this is what you're looking for, you can make it larger if you want bu repeating the designs.

These are piece-in-the hoop blocks done with your embroidery machine.<br />http://www.pieceinthehoop.com/shop/index.php?main_page=index&cPath=1_10
Look under Novelty and Combination Blocks.

Here are some for cats. Hope there is something there that will work for you.

http://quilting.about.com/od/quiltpatternsprojects/ss/cat_quilt.htm

http://www.crazycreekquilts.com/free-cat-quilt-patterns.html

I have found more quilt patterns on QuiltersCache than all other sites combined. Browse through here. They are in alphabetical order, or by subject. Good luck. Or you can look by technique (i.e. applique, piecing, etc.) Enjoy.

I just re-read your post. I think that you could make a "cake" block using perhaps slightly different colors or different tones of fabric in strips (for the layers) and use ric-rac between each "layer" for the frosting. Then you could put anything you want on top via applique, embroidery, or anything in your imagination.

This site has one of a birthday cake and differnet cake quilting patterns and lot more quilt designs. Hope this is helpful.
http://www.quiltbus.com/free-quilt-blocks.htm