I'm going to do a frame collage like this for the living room. Not sure yet if I want the frames to be all the same color or not. Some will have pictures in them and some will have personally crafted pictures/collages.
It is a great idea if you have a stairway or long hallway. I have one whole wall of pictures of my family in my livingroom like this above the piano. Dream Home,For the Home,Home Sweet Home,There's No Place