Is this a topic that would warrant an afternoon workshop?
I know that in my clinical practice, I have utilized many of the resources mentioned above.
Often, though, modeling, video recordings (with permission) of highly intense interactions, and modeling are all beneficial.
The conversation I use with parents involves the normalizing of parent-child legacies, both spoken and unspoken, about many things: money, religion, politics, education, work; but most importantly, what it means to be a parent or child. (For example: anger is not ok for children to express, but Dad was angry all the time; or "Children should be seen but not heard.") Then there are opportunities to deconstruct family conflicts: and ask the question: is this a new story (about my child) or an old story (about my own upbringing). The book "Ghosts From the Nursery" has informed my work on this topic again and again.
Also very useful: parental expectations versus developmental capacity.
Looking forward to more responses.
Krys