Path to excellence is about finding your passion and expressing yourself in a voice that is your own. Meeting interesting people who do that can be a great way to (un) teach children how to do that. But, life of a middle class family is pretty predictable. Most people make safe choices out of fear than love or passion.
The social network around a middle class family is very homogeneous. You encounter a very predictable class of people. So how do your break out of that band and get your kids to meet interesting people?
I think the online world comes to the rescue here. I recommend the following shows that give us a peak into the world of interesting people. You can watch them and introspect on the takeaways from the stories. I always ask them to synthesize back the human thinking behind the stories. Why did he/she do what they did. The struggles. The choices.
Emphasize the choices and what it takes to live with those.