I keep mine in CD/DVD storage shelves.
The newest shelf is the Benno DVD tower from IKEA :BENNO DVD tower - white - IKEA
And the other I purchased a few years ago and can't remember where I found it. But here's a picture from my old craft room: http://thepurpleplace.us/blog/wp-con...8/100_1368.jpg
You can see it on the left side of this picture, I also store my October Afternoon & Graphic 45 8x8 pads in this one.
(The new craft room is not quite ready for pictures yet, but getting close.)