cover wooden boards with wallpaper, and then take sandpaper to it.
LOVE!!! Temporary, great for rentals! Kitchen backsplash, pantry or bathroom upgrade - vinyl quatrefoil design -. $5.50, via Etsy. Genius idea!
A trick for hanging photo collections: Lay out your arrangement. Flip frames over. Lay waxed paper on top of frames. Mark hanger/nail spot on waxed paper. Flip waxed paper over and tape to wall, nail into wall where indicated. Tear down waxed paper. Hang photos.