At about 37:50 min into movie, when Billy is in lunchroom speaking to kids, there are 6 flags hanging on the wall in the back ground. They are the Azerbaijan, Andorra, American Samoa, Rwanda, South Vietnam & Botswana world flags. They are suppose to hang down when you turn them to the right it will show the correct way the flag is right side up. Except for the American Samoa Flag, the one with the eagle on it. When it turns to the right it would show the flag upside down.
At 45:07 when a girl in the background bumps a snowman, it rocks briefly because many of the snowmen were Styrofoam shells, open from the back, held down by cinder blocks.