The kid's full names are
Isaiah Dawson and
Naomi Rynell. I'm at a complete loss for little sister, so I used the nickname question in hopes of getting a different subset of suggestions... :)
Mimi insists on being called
Mimi, but
Isaiah is outgrowing Zay-Zay. *sniff, sniff!* I tend to lean towards three syllable (or longer) names because our last name is a single syllable.