At my office, we are moving to using the Apple TV 4 for a lobby display system using Video Sign Player. In short, it pulls from Dropbox to generate the slides. We needed a way to easily mount the Apple TV to the back of the TV. I settled on ReliaMount.

I can easily attach the Apple TV to the back of the TV and plug it into HDMI/power. With any project like this, I can't afford to spend $30+ on accessories because the project is already fairly expensive. It's simple to install, and it allows me to move on with my project.

Get it on Amazon for $12.95.