Pink chuckles at my occasional attempt to get more organized, but this is just crazy!
Check it out? Yeah. I'm all for office gadgets and toys, but that is a lot of postcards to deal with people. I'm all for collecting stuff, but if you want to find it later, flipping through cards would be a night mare.
I recommend creating your own wiki. I've got a pbwiki account I use to store stuff I might want to use later.
And I've got a wiki-manual for whomever takes my job this holiday season. That way, they won't come in 100% blind. They'll have a direct how-to of my processes and they can see if they can improve/change them to make it easier on them.