RonM9 from Instructables.com has build a fake led TV security light based on Arduino and NeoPixel WS2812 LED ring.
Fast & Easy Fake-TV Light module built for under $5; with enhanced features. With the use of this device you can go on vacation leaving your home with a lived in appearance and thus an added layer of security. “I’m up and I am a night owl … or perhaps asleep on the coach in front of the TV, ready to be awakened.”
Fake TV Security Light – [Link]