I collect and study counterfeits so whatever fakes I find would be photographed, classified, conspicuously labeled, and then come to rest somewhere in my black cabinet.
If it's a variety I already have several examples of and is otherwise not of interest, it gets stamped with "COPY" on both sides and it becomes play money for the kids. :-)
I also always keep a fake Morgan (a 1903-CC ;-) ) in my back pocket as a conversation piece.
Edit: I also couldn't vote in the poll. It seems broken.