Used these in a new office layout - these are really solid shelves that are easy to hang and perfect to hold your personal treasures, pictures, light books, etc. Keep in mind that if you have short items, you might need to set them on top of something for them to show above the lip of the shelf. I used some small strips of black foam rubber to do the trick!

Just two screws, so they are easy to level, which I am particular about.