Get Mishpacha magazine – they cover many different Orthodox groups, and it’s their stated mission.
Also, expose your kids to rabbonim not affiliated with your group. Ie if you’re chabad, to litvish. If you’re yeshivish, to chassidish. If you’re chassidish, to litvish, and make it clear that there are many different ways to serve Hashem.
You never know if it will be your child who will benefit, who will need to know that there are different ways of serving Hashem and they can be a good Jew even if they are not exactly like you.