TTS but without the Speech

With devices that have a screen (like Lenovo Smart Clock) is there a way to send text to the display without audio?

Thinking something like a solid red background with text of “Front Door”.

Use case would be to alert me while on a work call without the audio being heard on the call.

Actually, this may do what I need.

You can just follow the example from the docs to do what you want

You can adjust the URL in the example to change the colors and text (and image resolution)!

I tried that but it doesn’t actually show anything. The clock does change (to a music player) and no sound, but no image. I’ve tried with the url as well as with a local 'media source option.
Maybe the Lenovo can’t do it?