Mostly leather from cattle, metal parts are usually steel.
It is called a tree and may be made from wood, fibre glass or a composite material.
they made saddles. this was an important kob back then because every one used horses to get around. there are still saddles around today but im sure there made by machines.
Circle P saddles are made by Winntec and are made in Austraila. They are mostly synthetic as are the Winntec line and are lighter weight that regular all leather saddles.
A fiberglass tree for horses is a new addition to saddles. They are covered in fiberglass, a good material for saddles.
Double T saddles are made in India and then imported into other countries.
Traditionally cribbage boards are made from wood with a series of holes of drilled though them. Usually they are made from a type of hard wood material like oak.
Jeans are traditionally made out of cotton material.
The demand for saddles made from leather later declined with the advent of the industrial era
leather
horses
Ukulele frets are traditionally made of nickel, but can be made of plastic or other metal.
A ship's clock is traditionally made of a non-corrosive metal such as brass or bronze. It would then be enclosed in wooden furnishings to secure it and provide a stable platform.