You may find the book "Raising Freethinkers" of interest. It helps guide non-religious families through moral and ethical topics, questions about respect for extended-family beliefs, discussing death, and more.

Raising Freethinkers: A Practical Guide for Parenting Beyond Belief
https://www.amazon.com/dp/0814410960/ref=cm_sw_r_awd_b5hgwb4K86PHE