There is quite a bit of that floating around Eastern Europe
I wish I could find where gramps hid the MG 42 machine gun from the Gestapo BMW R75 which broke down when the came looking for him and ended up stranded in front of his GP practice. The legend is that a pot of sugar from the cafana across the road ended up in the fuel tank while the Fritz was turning the house upside down. The local police tasked with "guarding it" heard no evil, saw no evil. They Germans never came back to pick it up as the country turned sides and they hastily had to bugger out.
It was repaired, the machine gun removed. Gramps hid it somewhere and nobody knows where it is.
After that he used the R75 as his runabout for the next 30 years until my stupid cousin destroyed it by losing control on it and careering off the road. So while I cannot get my mitts of the R75, the gun is still somewhere out there. Probably in a concealed cavity in the old house somewhere (knowing gramps it is wrapped in oiled rags so it does not rust).