Are you interested in a way for the children and grandchildren to earn pocket money and for you to save on your fruit and vegetable bill? One enterprising parent persuaded his children to develop a vegetable garden and to swap surplus produce with others in the neighbourhood.  The family worked out how much they paid each month, on average, for their fruit and vegetables. They told the children that 50% of the cost saving would be given to them as extra pocket money. The result? Within six months the children were receiving an additional $35 per month and within 12 months they were receiving, on average, an additional $50 per…