A car fender
The same material as your car or mine.
The fender of the car is located on the front sides of the car. The fenders sit right above the tires.
Polypropylene
It will be made of many components the casing material will not matter much.
'The fender on my car got smashed in the wreck I was in.'
Either by volumetric compressions, which are based on the material's bulk modulus, or shear stress (think of a multi-car fender-bender where the first car hits the second, hits the third, etc.) which is based on the material's shear modulus.
Sheet Steel
A car chassis is made of heavy boxed steel, stamped steel or aluminum.
Safety glass, same as your car or mine.
Usually steel.
Music amplifiers have covers on the front of them that are known as Fender Tweed. The material feels like tweed and Fender is a very popular brand of music equipment.