When we move to Victoria, I intend on doing some type of wall collage-- something that was inspired via Pinterest (where most of these images came from). I like the idea of using different shapes, sizes, and mediums (so not just all photographs or art) and possibly to incorporate some mirrors.
In our current apartment (before we took most of it down), we had a lot of hanging pieces of art and photos that took up the space well. White walls are boring to me and we weren't allowed to paint, so hanging fun pieces up was the best next thing. I think with a wall collage not only will it give our apartment a funky bohemian/eclectic aesthetic, it will also allow room for new pieces!