I know this probably wont help much, but I think the main tip to mention when discussing situational awareness is how REALLY important it is.
Like I said, im sure you already know that, but you should really stress that it is just as important as actually flying the plane (no good flying a perfect 100 knots at exactly 2000 feet if you are not paying attention at the glider on a collision course from the right).
Very basic I know, but really hit it home to them.