My DM and I invested in Sauder storage cabinets many, many years ago and never regretted our choice. They are about 70"X 18" and have adjustable shelves and latched double doors. (Forgot...I think they are 30" wide) I have four of them, side by side and wish I had room for the other two that are stored(full of fabric) at DM's house. Don't know if they are still available. Have to assemble is only "Yuk", but not too bad.

What has worked well for me is the metal channels you attach to the wall, then insert shelf supports and add 12" wide shelves. I have them across the back wall of my sewing room. Then I have regular shelf units at right angles to them on the side walls.
I much prefer the 12" shelves. Although the wider shelves of one of the storage shelf units is great for UFOs.

This is what I am doing... I went to Polar Notions and bought their storage boards. They are spendy so I do 50 every other month. ( A friend made hers out of corrugated board.) Then I got a big metal filing cabinet. They fi in perfectly and I can see what I have. I use BIG paper clips to hold the fabric to the board because I didn't like their clips. ( My friend has hers standing on shelves like at a fabric store.)

My DH made my fabric storage cabinets, 8 foot tall, 14 inches deep, 36 inches wide, shelves are 13 inches apart. I store my fabric on Minnie bolts made of foam board or folded using my 6X24 ruler. The top half of these cabinets are made of peg board great for hanging all kinds of goodies on. My finished tops, waiting to be quilted, are stored with there backing in an old china hutch, UFO's are stored in project boxes with all fabric, instruction's, pattern, and anything else needed to finish the project.

I use the wire cube you put together and hang a quilt you made infront of it. this way the fabrics and UFO will have airflow and not get musky. stacking bin tends to make me forget what I have in them.

I have two cabinets that I purchased at Target like this one but mine are about 60 inches tall--I can't find it on line but the store had mine in stock and I paid about $39 for them.
http://www.target.com/p/closetmaid-2...i_detailbutton

I bought comic book backing boards on Amazon and file folder rubber bands at Walmart.
http://www.amazon.com/BCW-Current-Co...ic+book+boards

I fold my fabric and wrap it around the boards like the fabric stores do and then put a large rubber around the fabric to hold it in place. I would send a picture but we are in the process of moving so everything is in storage.

I have stacking bins that look like drawers. You can get them at Wmart, Dollar stores. I have some on casters that fit under my sewing table. I only put large pieces such as upholstery in the larger bins. I keep the UFO close for when I get bored and want to work on something for just a short time. I have a UFO for embroidery and one for quilting. Sometimes you can get some decent priced bins at the office depots when they're on sale. I always only by the clear that I can see through.

You can also ask for the material boards and bolt boards if they are in the waste basket or near the cutting table. No matter where I find them, I still ask if I can have them. You can use them as is or cut them easily with a box cutter down to the size you want. Those are free. They would just recycle them anyway and the stores are more than happy not to have to pay to recycle them.

I have stock kitchen cabinets from a big box store. The wall has upper cabinets, lower cabinets, a counter top, just like a kitchen. I have my Big Board and a cutting mat on the counter. Be sure to put electrical outlets on the wall for an iron and lighting.

Here's a storage solution from Ikea. I know you said you don't want open bookshelf a but these are small compartments that make it easy for organizing. You could buy two and stack them.