Camps, hobbies and other such activities where they see others their age do things and have a good time. As a parent, you're not necessarily the coolest thing in the world. However their friends and peers with varied backgrounds can fill that role. I used to do youth work when I was younger and some of the biggest leaps of personality happened in groups with very mixed backgrounds. Poor kids, rich kids, sporty, dorky, introverts, extroverts and everything in between, in the right environment they'll rub off on one another in all the best ways.