Ball Joints: no adjustment possible. If they are too loose, you need to replace them.
Steering box: there is a freeplay adjustment screw on the top of the box. Loosen the lock nut and tighten (clockwise) the screw a little, then tighten the lock nut while holding the screw. Test freeplay and repeat if necessary.
Typically a penny is used in Land Cruiser drag link ends. I adjusted mine, and they were both so loose that my steering wheel is no longer centered, but doing the links and the steering box really tightened up the front end.
I will find a way to recenter the steering wheel, eventually.