Okay, since no one else has mentioned this - way back when PC's first came out, they all had those "filler brackets" in the empty card slots. They were basically the same bracket that was used to anchor cards into the motherboard.
Those brackets were so great for prying out EPROMS (put angled end under EPROM and use rest as a lever) that we called them "extraction tools" as a joke. I still have a few laying around.
Casey