Just to show that shelving doesn't need to be complicated, here are two DIY looking projects that I have come across lately.

The first one uses some simple wooden ladders as a support for the cabinets. I'm thinking that you might be able to find something at Ikea to help you pull it off.

Shown above is the Container System 1530 by Postfossil. Made of simple plywood boxes that are held together by standard foldback paper clips. Pretty simple. Once again,you might even be able to pull off the same look with some simple boxes from Ikea.

More here:

Container System 1530 by Postfossil

Modular Multi-Ladder Step Shelf System