Have you seen the new Moda Cake Mixes (
http://blog.modafabrics.com/cakemix/)? I saw them demo'ed at a Quilt Show and they look very cool. Moda also has a whole list of layer cake patterns (
http://www.modabakeshop.com/category/layer-cake). They are cute. I also found these free ones on Craftsy (
https://www.craftsy.com/blog/2016/03...uilt-patterns/).