Renters Solutions: How To Make a Loft Bed Work for You. The shelf at the head of the bed is an ideal place to stash reading materials (and a laptop), but shallow enough so you won't whack your head on it when you wake up.
Spare room/craft room (or more accurate: my craft room with a bed so I never have to leave!) Article is actually about "thoughtful teenage bedrooms" but I see the room layouts as potential "studio-guest room combo.
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.