Google Chromecast.

Very easy to install on your TV and set-up via the Google Home app. Works with lots of apps and works well when casting to TV from a mobile phone or tablet. One downside I have noticed is that you have to have the device you are casting from set to the same WiFi connection as the Chromecast otherwise you won't be able to cast to your TV. Other than that I would highly recommend that you buy a Chromecast! 🙂