You can hang crates! Don't just think horizontal. You can buy any square crate and they don't have to be the same size to hang the wall for organization. All you need is to make sure that they are sturdy. But my favorite idea here, from the gypsydaisyblog, is the Coke soda crate or organize books. Here at home we use these low crates to organize canned food and other pantry items. I have tons of theses crates and others for sale.
http://tinyurl.com/yegnpz5 If you don't see the one you want just email me from my etsy site. I also have mason jars for sale.