Ever dug up hidden treasures?

[homegrown]

Been helping a mate put up a shed in his backyard and had to dig the holes to fit the posts. What we dug up was interesting, a very old truck transmission and a huge wrench that could've come of the truck and other old bits n pieces . also not long after travelling all the way to ballaclava an old couple told us they came across model T Ford parts. All buried under their bird cages. I could'nt beleive when they said they scrapped them at the metal yard because it was no good to them.
Although what we found was nothing special but has anyone else ever come across something buried in their back yard?