I don't have what you're looking for but have considered designing something very similiar to what you've just described for my children. If you find what you're looking for, I'd love to see what it looks like.

here's a site that has some of the characters in a graph. I have used the Elmo one on the back of a sweater. Also used her penguin for an afghan - nine squares - 5 penguins/4 solid.
{{gwi:1574075}}

Here is a link that might be useful: Shona's Place