In this project, I wanted to make a mirror that looked pretty normal during the day and then spring a surprise when the lights went out showing a scary image and a playing a screaming sound. Using some mirror tint, LED lights, and an MP3 module I managed to make this happen.
I have a shortlist of other videos around the project here.
You can also make a scare mirror with the parts below. The controller will come with a full wiring diagram.