Pioneer Space Saver Photo Albums can help you create an ultra-compact photo library. Each Space Saver Photo Album contains 144 slip-in ... Full Description & Details.
I have been using these to store some of my childhood photos as I pull them out of magnetic albums. They are practical and don't take up a ton of space. I also like that they have space for a couple CDs and negatives.
The only negative I have found is that in some of the ones I have there is one sheet that looks like it was mis-stitched (and so it does not have the pockets). Not a huge deal, but a bit annoying. I have had mine for a few years now - not sure if it is something that has been fixed.