I love the low shelf all along the wall. This is what I'm going for in our boys room, but we have a long low bookshelf. I think the cube shelf would be better - it's hard for them to keep the books on that long shelf organized, and we can't store any toys on there with the books or it just becomes a mess. I think this is what we have to do.
Serenity Now: 28 Kids' Toy Organization and Storage Ideas I have exact shelves from Ikea in both my boys rooms...LOVE THEM! in one I have bins for toys all labelled with which toy belongs in that particular bin and the other holds books, puzzles and games (of course that one goes in my eldest sons room as we would like the books to stay in one piece = ) )