I had a big problem when re-organizing my closet and trying to find a good solution for my jewelry. Not only do I love jewelry and have lots of it, I also make jewelry, so you can imagine I have quite a bit of it.
I came up with a unique idea, I decided to use a over-the-door shoe rack. I know that they have over-the-door jewelry racks, but they were all way too small for my vast collection. Instead I found a shoe rack that was good for something like 36 shoes. It has bars going across and is perfect for hanging all of my jewelry. Now I can see all of it in one place and really know what I have.
For my rings and earrings (since I don't have as many) I still have a separate little rotating rack that I got at HomeSense.
The lower racks I've used for scarves. I just loop them around the bars. I love it!