Plants in the bedroom -- or any room -- are always a good idea! The crates on the wall also help create a little bit of extra storage, which is a great decor idea for small spaces and apartment living.
Kitchen or anywhere DIY. Seems simple enough, depending on your gap between shelves, anywhere from ropes to ropes for your spacing. You could even use wider wood, just adjust your rope length to accommodate your width and height of your shelves.