I don't know of anything better that I can think of. I also don't necessarily think a replacement is needed. Long after floppies are consigned to myth & legend, the icon can live on. I see road signs featuring steam trains but I've never seen a steam train, I see rotary phone images and I have only hazy memories of using one in the 80's. The purpose becomes its meaning and its origins are pretty irrelevant.
I'm looking for someone to help with the business-y side of things. Posted recently but it was badly timed/uninteresting/drivel and nothing came of it (http://news.ycombinator.com/item?id=3188364).
I've got the technical side covered but interested in anyone who can help me get started/further.