One of the projects I was working on around the house before I was deployed was a set of shelves to hold my comic book collection. Turns out the design I worked out fit in the basement pretty well. Sadly I didn't take many in-progress shots, but I was more concerned with getting them done (and the basement was a mess as I had to build and sort/shelve as I went).
It was designed to hold the long comic boxes (roughly 30 inches long), three per shelf. I tested the first shelf just on two beams with three boxes, and I couldn't detect any sagging or deflection, so I know these are sturdy.
As it turns out, they also hold an assortment of other things, including Sterilite brand bins we picked up at Wal-Mart. With three of these we have lots more storage, rather than the disorganized mess of moving boxes and other stuff. Much better. If the ceiling were higher I could put another row on top, but c'est la vie. I'll have to wait until the next house.