https://www.techradar.com/news/best-roku-streaming-device

While the majority of mid and high-end TVs sold these days include Smart TV interfaces for you to access all your favorite streaming services, there are still plenty of older or cheaper sets out there that can only dream of getting connected to the internet.

Manufacturers like Roku produce a number of very cheap streaming devices that you can easily plug into the back of your existing TV – which can then connect to your Wi-Fi and offer you access to streaming services such as Netflix, iPlayer, or Amazon Prime.