Relax that shoulder
One thing I've noticed in the two-week MDTTC camp we're running is that a lot of players hunch or tighten up their playing shoulder when hitting forehands. I'm almost ready to make a recording that says, "Drop your arm to your side. Relax the shoulder. Now bring up your arm to a forehand position, keeping the shoulder relaxed. Bend the elbow to bring the racket into position. Now hit your forehand!"
Another common shoulder problem is not rotating the shoulder on the forehand. If you have your back foot slightly back (no more than 45%, often much less), and rotate your shoulders so you are looking sideways, you suddenly have a huge forehand hitting zone. If you don't do this, then you are jammed in the front of the hitting zone with little room to backswing.
Seven new juniors
In our camp yesterday, we had seven new junior players (out of about 25 total), ranging in age from 5 to about 12. I took all seven in my group - we divide the players among the coaches - and spent the morning working on forehands and backhands. Went pretty well! They also had fun with the "knock cups off the table" game, and many cups were severely hurt. Kids are so cruel. (What did we do during break? Brain teasers, of course. Yes, at a table tennis camp. Really.)
Susan Sarandon and China
Iran and U.S. Ping-Pong Diplomacy
I Love You points