Sadly, these RIBBA picture ledges are slated to be discontinued, replaced by a wider depth) version by the name of MOSSLANDA. So buy whatever may be left in IKEA stores or find them second hand on Craigslist/Kijiji.
Just a few gallery wall ideas for Change of Art's "Eight is Enough" gallery grouping of 8 GalleryFrames. Every frame comes with its own templates, so hanging's a piece of cake. Nice and flexible - to suit your decor.
workspace or rather the shelves with pictures arrangement for the living room. Don't know if we'd have 3 shelves but I like this idea to create a changeable arrangement of pictures and items on display. You can also put more or less