Create extra storage space by screwing wire closet shelving to joists in your garage or basement. Wire shelving is see-through, so you can easily tell what's up there. Depending on the width, wire shelves cost from $1 to $3 per foot at home centers.
Double Decker Garage Storage Shelves: If you're out of garage floor space, try looking up for garage storage shelves. Read more: http://www.familyhandyman.com/garage/storage/double-decker-garage-storage-shelves/view-all