Challenge your child to complete a list of activities to receive a "Wise Steward Award". Make the award something tangible and fun, like a badge or small certificate they can display in their personal space.
This article from the To The Point Series proposes a teachable moment that grounds our giving in these truths:
Teens can grow their stewardship muscles in many ways that you might not have considered. Periodically serving in the nursery or shadowing with a church commission are good places to start. This article expands on 7 different ways teens can steward their time and talents.
This handout outlines, from a Catholic perspective, the role of parents as living models of stewardship.