Ask an Adviser - Outside Property What Is A Good Investment For Young People?

My two children (23 and 21) live at home and have each saved around $50,000. Neither plans to leave home in the short to medium term but one may want to travel and work overseas in the next 2-3 years. I am not really in favour of them buying a property (either together or separately) as it burdens them with a significant debt and is a major commitment. At the moment I have been putting their savings into low cost index funds (one Australian equities and the other a diversified equities fund with Vanguard). Are there other options I should steer them towards? They have no plans for any major spending.