Show your kids this amazing comparison chart to illustrate the power of starting early when it comes to investing. Then open a Roth IRA as soon as they earn W2 income. (See: http://blog.famzoo.com/2011/04/pave-road-to-retirement-for-your.html)
They were two months away from becoming parents and had more than $100,000 in total debt. Being able to talk about money was difficult but important. But EveryDollar made it easy for them to communicate without saying a word.