I once built a beautiful organizer that fit all the things I was putting in place. As I was building it a friend of mine was looking at what I was doing and said I shouldn't make it too specific as over time things change. I ignored him. Several years later when some of the created spaces wouldn't work for anything I then needed, his comment came back to me.
Flexibility and ease of getting things in and out and having a simple way of organizing seems better over the long run. The soft bags idea above is a really good one! Or perhaps some other way of having an easily adaptable organizational method can be found.
Let is know how you end up doing it, photos of course are always welcome.
dj