Well, almost nothing. I couldn't pass up a Mercury-head "Neutron Irradiated Dime" from the Museum of Atomic Energy (AEC), though it made a Geiger counter tick for only about twenty minutes, decades ago (paid about par, too -- see eBay). A little patch warning that I suffer from a STUPIDITY ALLERGY seemed like a good idea, as did a couple of small stickers proclaiming:
BREAK SHIT.Words to...not live by, really, but to keep in mind. Sometimes (not often, but sometimes) it can be an appropriate response.
There were many fascinating old revolvers and so many beautifully-engraved firearms that I was tempted to skirt the prohibition on photographs. Not this time -- I really should apply for a Press exemption. But oh, the shame if people thought I was a newspaper reporter or some other flavor of lamestream press....