A heliograph is a device for sending messages or signaling by flashing the sun's rays from a mirror.
Hollywood mirrors are more expensive than regular mirrors, for celebrities are "using" them. Go on www.amazon.com and you'll probably find two mirrors exactly the same, but with "Hollywood" typed in front of one name.
The item does not have a good name. They also use that kind of device on Wheel of Fortune to buzz in on three questions a show. On wheel of fortune the best they could come up with was signaling device. You're welcome to think of a name and let Jeopardy and Wheel of Fortune know.
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.
Funhouse mirrors.
Side view mirrors.
Eisoptrophobia is the name of the phobia related to the fear of mirrors.
You would use the alphabet of the semaphore flag signaling system. See the related link for the picture of signals.
The name of device was material.
Faith
very light
A furniture store. A house of mirrors in an amusement park.
Faith