Utilize space between studs to add shelving. This would be ideal down a long hallway. Add glass shelves and lighting for display or cabinet doors to hide stored items. Install adjustable shelves to allow for easy changes.
Would really like to do some of the built in/recessed shelves. Use this project for built-in shelves to unlock hidden storage space between the studs in your walls. Install a single, open box of shelves, or install two boxes and add a set of glass doors.