Do you know much about how leather is processed and used?
Leather is a highly useful, durable, and flexible material that is produced anywhere from a home tanning cottage industry to heavy industry. 
Is it produced in a lot of places?
People around the world use leather to create various useful goods such as hats, jackets, belts, gloves, even bookbinding and leather wallpaper! 
Leather wallpaper?  I did not know that was even a thing - can you tell me more?
It's sometimes called "wrought leather" and is usually gilded or painted. It was in use in around 1650-1750 to decorate the walls of of the wealthy.. 
Ah, so it's not in use anymore - or at least it's not widespread now.  That is interesting - what else about leather would be something unusual?
Leather carving
Leather carving is the process of giving a three-dimensional appearance to leather craft objects or works of art by cutting and stamping the surface.
Materials.
The only type of leather suitable for carving is vegetable tanned, full grain leather. This is because the vegetable tanning process allows the leather to absorb water, which is used to soften the leather before the carving process, and the grain of the leather is necessary to allow the leather to hold the shape after the carving process is complete. Other
Leather
Leather is a durable and flexible material created by tanning animal rawhides and skins. The most common raw material is cattle hide. It can be produced at manufacturing scales ranging from artisan to modern industrial scale.
Leather is used to make a variety of articles, including footwear, automobile seats, clothing, bags, book bindings, fashion accessories, and furniture. It is produced in a wide variety of types and styles and decorated by a wide range of techniques. The earliest record of leather artifacts dates back to