A history of pyrography
Pyrography is one of the oldest crafts, perhaps dating back to prehistory from when man first learned how to make fire.
Tools of the trade
You can use many heated metal tool to create pictures on the surface of wood by burning.
Alternatively, you can purchase modern electric pyrography tools like wire-nib burners with a single temperature a bit like a soldering iron or solid-point burners allowing for different temperature settings and interchangeable nibs.
Strop for cleaning nibs.