we have a cannon, one that has been MIA for the last ten years but showed up last weekend at the 175th commencement. it's been presented to the Soviet Mission at the UN in the 60s as a sign of friendship with Soviet students, left at the gates of the White House for President Nixon in protest of Vietnam, given to the managing editor of LIFE, has turned up in a celebration cake for the University's anniversary, and has travelled the world (and it sends postcards too)
(it's tradition to steal the cannon if that wasn't clear. not quite the thing that you paint, but it's our version
)