Use adhesive picture hanging strips
Use removable wall hooks
Use adhesive hooks rated for picture frames
Use washi tape for lightweight photos
Use poster putty or mounting putty
Use double-sided mounting tape
Use a picture rail system with hooks and wires
Use a tension rod with clips
Use a wire grid or mesh panel
Use a corkboard or foam board display
Use a clip frame or frameless photo clips
Use magnetic photo holders on metal surfaces
Use a pegboard with hooks or clips
Use a decorative ladder or leaning display shelf
Use a tabletop easel for framed photos