I love an unusual self-striping situation, and the new organic Fair Cotton Craft form Katia is just that. The pretty combination of pastel stripes and the natural base initially caught my eye, and then I looked into what the yarn does!
Katia has a few patterns available for download, including the sweet freebie Just-One-Cake Baby Blanket that uses...yup, just one cake. There is also this free (but not Katia) crochet blanket that would be perfect in this yarn.
I am also wishing that I still had a child small enough to justify knitting this Just One Cake Kid's Sweater, which is written for size 6. This pattern is not free, but I think it's only a few dollars to download. Maybe I'll knit it anyway and find a 6 year old who needs a rainbow sweater.