My sisters and I did this type of thing as an anniversary quilt for our parents.
Some of the things we included were significant world events that affected our family - VE Day, because Dad came home from Europe that year, for instance.
The birth of a child,
the year a child started school,
special dates (new diamond on the 25th anniversary of their engagement)
the houses each time they moved,
a pic that symbolized a family joke from a particular era in their lives,
It was fun thinking of events in their lives, and asking relatives for suggestions. (I guess I need to start another for them. It has been 26 years since the first - at 40 years!)
I think you have a great idea. Your husband will love it. I'll bet it becomes a favorite quilt of you both.
Happy quilting! :thumbup: