The "assuming they weren't working" adds a major wrinkle because my default suggestion would be to get them into better jobs where professionalism and responsib

The "assuming they weren't working" adds a major wrinkle because my default suggestion would be to get them into better jobs where professionalism and responsibility actually matter. At least as far as teamwork (and possibly independent work) is concerned, sports or marching band are the first two summer opportunities to come to mind. However, that still leaves out customer service (and the effectiveness of that actually being picked up by most teenage employees is debatable, at best).