Design outfit Orange 22 has an amazingly innovative shelf system named PULL that utilizes the power of a magnet.

"How does Pull work?
Pull. consists of a wall panel module that can be skinned with any material. For example; leather, suede, vinyl, laminates, real wood veneers, powder coat, full color printed graphics, wall paper, fabric, and on and on. Its truly unlimited.
Then choose from an existing offering of fixture elements that can individually hold up to 35lb pounds of product. We offer custom fixture design capabilities.
Then get creative and tell your story. No annoying grid to fight with, no visually obtrusive holes to distract from your product. It is simply beautiful. Just the way it should be."

Very cool.