In This House We Will Giggle
I LOVE this book!!! If you're a Christian parent of young kiddos - or even if you're not a Christian family, but you want to incorporate some basic values in a FUN way - then BUY THIS BOOK!!! You can read the reviews here, and you can buy the book here. (I have no connection whatsoever to the author. I just love the book and use it regularly during our homeschool "circle time.")
Also, there are some great virtue cards which go along with the book. Our family focuses on a different virtue each month (love, joy, forgiveness, humility, gratitude, etc.), and I like to post each month's virtue card on the fridge - that way little eyes can see it often. ;-)
I also like to add a song to go along with each month's virtue study. (For example, we're going to sing Servant of All by Seeds Family Worship during September's focus on service.)
This is a super easy way to incorporate virtues into our daily lives! (And, yes, I know that we don't need a book to help us teach virtues to our children, but I think you'll really appreciate this collection of specific ideas/activities for young kids. Sometimes a "written plan of attack" can help ensure that we're actually putting enough effort into the stuff that matters; at least that's true for this particular mama!)