Not all teapots are metal. Some are ceramic; some are porcelain; some are glass.
1) We know how to make (very) flat glass. 2) The glass keeps the reflecting surface (usually a metal) from corroding.
When the car's windscreen is broken, it's fairly easy to replace. Usually, any auto shop can replace it but some good options available nationwide are Apple Auto Glass and Speedy Glass.
Not all cameras are made of metal. Some types of cameras, like the SONY DSC - T7 are made of a metal outer core, but the inside still consists of many plastics, glass and flex cable materials.
Spoons are made from many materials such as metal and plastic, which are the most common, to wood, glass and ceramic.
Chess sets are made from a wide variety of materials such as exotic woods , metal , glass , stone and I've seen some that were made from the bones of a camel .
Common light switch covers are made from plastic. There are also some that are made of metal, wood and brass. Some rare switch covers are made from glass and stone.
A wing mirror is typically made of a combination of materials, including plastic, glass, and metal. The casing or frame of the mirror is commonly made of plastic or metal, while the reflective surface is made of glass. Some modern wing mirrors also contain electronic components for features like heating, auto-dimming, or turn signal indicators.
Barometers are typically made of glass and metal components. The glass is used for the tube containing mercury or other fluid, while the metal is used for the frame or casing to hold the glass components in place. Some modern barometers may also use electronic sensors instead of traditional components.
Roman bowls were made of ceramic, glass or metal. The metal bowls could sometimes be either gold or silver and some were decorated elaborately while others were plain and utilitarian.
Glass Paper Metal Wood Wool
Glass is typically made by melting sand, Much of that sand consists of quartz. Some glass will also be made of recycled glass.