I believe that they are mostly just in storage now. However, I have heard of a program where NASA will work with certain schools who receive some samples of lunar rocks to experiment with. Right now our astronauts are only traveling in the Shuttle. Although many of us would like to have men and women visit the moon and Mars, there are no current plans. This is in part because we no longer have manned spaceships that can travel that far.
Magnetism is one of the basic forces of nature.
It exists regardless of whether there is gravity or air. Magnets would definitely work. What would be neat would be to see them floating weightless in space. You could push and pull the magnets around using other magnets. It takes 8.5 minutes to reach space after launch.