Back to school is a time when many moms witness their money sprout wings and take flight, finding their homes at retail stores across America. I know that consumer spending is good for the economy, but I don’t take it upon myself to keep the entire US economy propped up, so when my first-grade son announced that he wanted a backpack with rollers, I saw this as a wonderful financial teaching moment. His school is small, and he doesn't walk to or from school. He didn't need rollers.

I told my son that I would give him $8 toward a backpack. I told him that if he wanted a fancier one, he could put up some of his allowance money for the difference. That's the rule at our house. Mom and Dad buy the basics the kids buy the extras. It was amazing how my son’s perception of the need for rollers changed when his allowance was on the line. Yes, he has concluded, a regular backpack will do the trick this year.