But it's not just the affordable format that has me excited about these books. The first thing that stands out are the lovely illustrations by Robin James. This first book in the series features a giant pink sea monster (Serendipity) who doesn't quite know what she is or where she belongs in the world. Who hasn't felt like that at some point in their lives? And I don't know how anyone could fail to fall completely in love with Serendipity at first sight!
I can see how adults might find Cosgrove's inclusion of a specific 'moral' as overly didactic, but I can recall as a child that I was only vaguely aware of this and truly just enjoyed Serendipity's little journey of self discovery. As an parent I see Cosgrove's morals as a springboard for discussion with a child about the story and its meaning.
I highly recommend this and several others in the series - namely the Morgan books featuring Morgan the unicorn.