I have some of them too. Maybe a MagicBand will pop out if we get lucky, and someone really used the system wrong.I have a bunch of old unused FastPasses. I'm going to try putting them in and see if I can get some old room keys to pop out instead.
I have honestly thought about trying to use a Fastpass exactly 2 years after we got it. Since we always go in January/February, maybe they won't notice that it says 2010 rather than 2014, as long as the time/date is right.