I'd try bringing them closer to God. If we do have a worldwide disaster in 2012, bunkers will become tombs. How long can one survive in a bunker? Eventually people will run out of food and have to come out to a desolate world. If we put our faith in God, we may all survive. I have children too. I am learning how to live off-the-grid. People who know how to survive in extreme situations may make it. We need to know how to grow food, get clean water, defend ourselves, and live like primitives.
Of course, nothing may happen. I think we are going to have a world changing event, but not a destroyer event. We may all be living off the grid if the NASA pole shift predictions happen. We will lose our electrical devices and power grid.