Looking for the simplest means of playing videos from a USB storage device on a non-smart TV
Having already configured a VLC-powered Google TV configuration with USB hard drives for a relative without the router or download speed needed for reliable streaming, I'm now trying to configure a similar setup for another relative with a non-smart TV and an even slower download speed.
The only requirements for such a device would be the ability to be controlled entirely with a remote, a USB-A or USB-C port compatible with USB hubs and media storage devices, and the reliable playback of videos of assorted codecs and file extensions. As Roku, FireTV, and Android/Google TV streaming sticks tend to be plastered with ads as a means of promoting content within their ecosystems, an alternative HDMI device that minimizes the number of button presses between turning on the TV and and reaching the navigation menu for videos on attached USB storage devices would be preferred.
Plug your laptop into it and use VLC. That's the simplest approach.
If you want a dedicated playback system any little arm SBC that has decent hardware accelerated video playback should work well. Something like an RPi 4 can run a basic desktop with hardware accelerated VLC, or you could run libreelec. Look for something modern that supports the encodings you think you might use, it's a drag dealing with choppy playback because you're trying to play an encoding the board doesn't support.
Or you could run a media server like PLEX somewhere on your network and use a Chromecast plugged into the TV as a streaming target. This lets you use your phone as a control device. The simplest setup for this is to just run PLEX on your desktop or laptop and shut the server down when you're not actively using it.
I'm not using a dedicated PLEX server, just running it on a machine that's not always on.
I was trying to make the point that you don't need a dedicated PLEX server, you can just fire it up on a laptop when you're going to use the TV. This way you can setup TV streaming by just buying a Chromecast.