A person who makes mirrors is called a mirror maker or a glassworker specialized in mirror production.
A person who makes mirrors is called a "mirror maker" or a "glass artisan." They specialize in crafting mirrors from glass materials using various techniques like silvering or coating the glass with a reflective surface.
A cartographer
Luthier.
Cartographers.
Mirrors.
An investor...LOL
Luthier.
If you're looking for a technical term, that would be a cartographer.
A luthier (pronounced /ˈljuːti.ər/)
A cook makes pickles. There is no specific term for a "pickle maker."
Shower mirrors, or small mirrors that hang in the shower, usually for the purpose of shaving, can be found at many retailers both online and in person. Shower mirrors are most useful when they are "fogless." These can be found at Target, Bed Bath & Beyond, Brookstone, and Amazon, just to name a few common sellers.