Children love to give. Whether at Club, Sunday School or Vacation Bible School give them opportunity to express their worship and thanks to God in the form of financial giving. But suggest to the children (and the parents) that they give their own money (allowance, money earned doing odd jobs, etc.) instead of asking the parents for theirs. This will teach the children to give of their own resources and give them the joy of knowing that their own money is being used by God.