I'm not big on gallery walls, but I like this idea. Make it a small smattering over a hall table/entryway bench, and fill in spaces with small items/letters instead of just a bunch of similarly-sized frames.
Family living room with picture gallery. Personalise your living room with an arrangement of favourite family photographs. A bare expanse of wall above the sofa or a sideboard makes the ideal spot. Choose frames that are identical in size and colour, and arrange in a grid formation to make a visual impact. Corner chaise sofa, Collins & Hayes, Box frames, Bombus.