>>2254749Lots. my family has lived in the same house since the 1500s, and always taken good care of things. Just listing what I know of the top of my head:
1940s Wehrmacht backpack (the one with the fur top and cloth flaps)
Several pocket knives, the oldest from the 1890s (and slowly losing the chrome plating on the tools).
Hard arkansas whetstone. Bought during WW1, and still almost perfectly flat.
1920s Simplex alcohol stove. The patented design Esbit and Trangia ripped off.
Several frame saws, machetes, and single-bevel hatchets and axes. No splitting axes though, since my grandfather was stupid enough to drive them with a sledgehammer.
A Reichsform scythe. Don't know the exact year, but going by the smith's stamp and the shape, sometime between 1870 and 1900.
A full set of barrelmaking tools. Except the drawhorse, which my grandmother gave away a few years ago thinking nobody'd need it ever again. Have to replace that with a new one sometime.
Two spinning wheels. Both with ivory bearings, meaning they'll last a few more centuries easily.
Two tractors, one of them singleaxled. Both from the early 50s.
Two 50ccm bikes, one from 1951 and one from the mid 50s. Both still run, and since they use the common Sachs 50 engine, spare parts are still available. German quality.