I recently read about this book, Can Mom Have A Piece of My Birthday Cake by Rochelle L. Stern, on Diabetic Parents. I ordered the book (via Amazon) for my two year old. Though it is too mature for her at this time, she enjoys flipping through it.
My daughter observes me giving myself injections, changing my pump set, testing my blood sugar, treating a low, treating a high, etc. I thought a book explaining diabetes would come in handy!