Found a book at the library that looks promising: "The Values Book" by Pam Shiller and Tamera Bryant. It contains lesson ideas and related books to read your child about 16 basic values that you should teach a child.
While I think some of these values overlap, when considered from the Islamic perspective, I find this book to be a good starting point (at least for me) in working on lesson plans about Islamic Behavior. I have seen a few other books about this topic (which I will mention later, insha'Allah) that are also beneficial.
Right now I am working on building my lesson plans based on these values and will be adding other good character traits as I go on, insha'Allah. I am writing each trait down and then adding a listing of stories from the Qur'an or Sunnah that support the benefits of that character trait. If I come up with stories related to a particular trait, I will most likely read the specifics and make a story of it to present to the children. I am also listing specific Qur'anic passages and hadith that speak about the benefits of that particular trait. Perhaps if they are not too complicated, I can explain them to the children.
Insha'Allah, I will post more as I get going on this project. I already have some good ideas and I'm actually looking forward to presenting my first lesson when I get it finished. I think the girls will enjoy it!
Sumayyah Umm SAA