I helped a friend's brother in law tear down some walls between 2 shops he'd bought to turn into a restaurant. When we lifted up the old floorboards we found a human jawbone and the metal components of an antique gun. I'm sure there was more, but he didn't want to slow up construction so he just left it there.
A better story comes courtesy of my friend Gavin, whose father was an orthopedic surgeon. After he completed his doctorate they allowed him to keep an actual human skeleton for use in his practise. After a time he found he didn't need it anymore, so he put it in a cardboard box and stored it in his family's games cupboard.
When Gavin was a teenager he and his brother found the box, and started having sword fights with the shin bones. They started getting their friends over for tournaments and everything, and the winners got to keep a bone. After they tired of that they strapped a femur to the grill of Gavin's mate's ute, where it's been ever since.
Of course their dad eventually caught them, and rather than dispose of the body correctly (and have to explain the chips, dents and missing pieces), he just put what was left in a hessian sack and left it up in the roof.
5 years and 2 new owners later the police knocked on the door of their new house.
Gavin now lives here in Tasmania, when he moved down he bought a house and discovered it has a small room down the back of the basement. The room has a lock on the outside of the door, holes in the walls that appear to have been smashed with a rock- these lead to small tunnels that appear to be dug out by hand, and rough steel bars bolted over the windows on the inside (very obviously not done by a builder). In the room he found half a backgammon set with no dice. There were no other contents.
