while wandering aimlessly through ikea a while back, i stumbled across this idea using a “family tree” to decorate a blank wall. (click on picture to enlarge). the ikea instructions read “create a family tree using STATTHULT wall stickers and NYTTJA frames. start by applying the stickers to the wall and arranging them any way you wany. then with family pictures inside, attach the frames to the wall interwining them in the tree.”
at ikea they showed the idea in a baby nursery, but it would be perfect for a living room, a hallway, or anywhere you have a little bit of blank wall space.