Building up with matching sidetables. These little tables are often available in opshops, paint them white and create the contrast againts the dark wall. Use for storing decorative items, books, magazines etc.
Give a new life to an old door. It serves well as a moodboard& noticeboard, displaying your precious collectables. Or in the rental home it saves the walls from holes, just attach different kind of hooks on the door to hang your clothing& accessories.