The biggest thing now in home centers is all the cool stuff you can buy to upgrade your garage: cabinets, shelves, work surfaces, tool racks, made of plastic or metal, plain or colorful. I love the look and the organization of those garage systems.
A couple months ago, ShopNotes magazine designed a Workshop Upgrade that achieves the same levels of organization, flexibility, good looks... and you can build it yourself. It easily configured to what you want and need, and it's all made of MDF, 2x4's and a little pegboard. Here's a video. And here are the plans with a couple big photos.