Allowance Magic - Short, simple authoritative allowance system. Full disclosure - We sell this book on our site, www.themoneymammals.com.
Thrive By Five - What can kids learn about money BEFORE they enter kindergarten? A lot!
Early Childhood Financial Literacy - Great study about the importance of teaching kids and building good money habits young.
Frugal Dad - This Dad is on a mission. Join him.
First National Bank of Dad - I LOVED David Owen's book. His wit and wisdom can help you teach your kids about money. Incredibly well written.
The Money Mammals (www.themoneymammals.com) - Full disclosure - I created this DVD. Like Frugal Dad, I'm on a mission to teach kids about the value of money and I believe it's important to make the process fun. Our DVD is a family affair - my wife and I came up with the concept to teach our kids about the value of money, I wrote the script and my brother wrote the songs. Your kids or grandkids will love the DVD and they'll learn something in the process. If they don't, holler at me (firstname.lastname@example.org) and we'll give your money back.
Let me know what you think and post YOUR favorite resources.