For Comic-Con this year, Community creator Dan Harmon decided to show up to the show's panel in a decidedly handmade Iron Man suit. Now you can own that (probably insignificant) piece of Comic-Con history! It's probably custom-fitted to one body type (Dan Harmon's), and it probably has some other positive characteristics that I can't quite imagine myself. Oh, and it "Smells like Dan!", if you're into that kind of thing.
It starts at $500 with no takers so far.