OK, I have a couple. We do park 2 cars in our garage, so our storage is on the walls. The cabinet in the first picture is for basketballs, tennis rackets, etc.
http://img.photobucket.com/albums/v4.../garage1-1.jpg
These shelves are over the garage door - when the garage door is open, you can't even see them.
http://img.photobucket.com/albums/v4.../garage2-1.jpg
We also have shelving along one wall - wooden frames we bought at Menards, with plywood sheets for the shelves themselves. I think they're 2 feet deep, and at least 8 feet long.
If I was going to use my garage just for storage, no cars, I would build big shelves along every wall, and stack plastic tubs in the middle, with everything labeled so I could find it.
I would like to re-do, re-organize our garage for DH for fathers day ..... but not sure how I want it to look. Ours is a mess and used for storage -- so not looking to be able to fit a car in it -- just wanting to not be embarassed when the door goes up 
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