Not having little ones during this journey I regret not having more advice for you. I have seen the damage it did to my young adults though, and find little I can do for them.
One thought I have for you other than the obvious of child or family C, is books. Lots of them out there for various ages. I will strongly suggest exploring the ones for little kids surviving or going through greif loss, or D. Even if this is not yet a D, and may not be one ... so don't focus on that aspect. Just look into the effect of turmoil on the kids and how to help them.
