As my children have grown and started their own lives it has become almost impossible to get all the family members together for one family pictures.  So my solution to the problem was to create changeable scrapbooking photo mats, so each time I get a new picture of a family I can update my pictures on my office wall very easily by just clipping it on the page.  I have designed some of the frames with 2 pictures for each family so as new additions come along I can attach their pictures too.