Unmmounted Stamp Storage

I have a TON of unmounted stamps and, of course, my collection is ever-growing!  My goal this month was to get them more organized.  I found these great little bins from Cropper Hopper at my local Archivers.  They come with plastic index cards that your unmounted stamps adhere to.  I attach the sheet with the images to the card and then stick the stamps on and label the tab with the name of the set!  I have several bins and divide the stamps by company - I have one bin divided by theme for my misc company stamps.

I store them all on shelves in one of those kitchen towers.

How do YOU organize your stamps?