I think this is something that everyone should do in their home; display photos of people. Of people who are family and friends, so that you are always surrounded by their happy faces, and your children can be surrounded by their extended family and special friends too.
A wall art display of a photo collage not only looks great, but it is also a very meaningful option if some of the people in the photos have passed away, because you and your family are reminded of them everyday, and your kids can ask questions and get to know family they may be too young to remember.