I have recently been thinking of ways that magnets could be useful. The first way is that you could possibly curve bullets in flight using a beam pole magnet. I don't know if lead is magnetic though, so it could be busted before it gets off the ground. The other way I have been thinking about is possibly creating a way for an easy way of spacecraft liftoff to be done. Possibly, by creating a magnetic field similar to that of the area you are at, you could create enough propulsion to get off the ground and up into the atmosphere. Of course I have no way to test either of these theories of mine, so I am unable to tell if they could work at all.