OK, this is cool
https://www.instructables.com/Jcorp-Nomad-Mini-WIFI-Media-Server/
What is Jcorp Nomad?
Nomad is a self-contained, battery-friendly media server that fits in your pocket.
It creates a local Wi-Fi hotspot with no internet connection needed, allowing you to stream your own movies, shows, music, books, and more directly from a microSD card. It’s perfect for camping, road trips, classrooms, or any scenario where connectivity is limited or unavailable.
TL;DR: Low power ESP-32 media server, that creates a local WiFi hotspot, media front end and serves upto 8 streams simultaneously.
Disclosure: no affiliation with project, other than wishing I’d thought of it first. I love me some ESP-32 black magic.
How will your phone stream movies to the TV, little billy’s tablet and Grandma’s laptop, while letting Suzie listen to her favourite music and Davey read his CBR comics?
What does your phone draw, BTW, when watching media or casting it? Is it less than 0.8 of a watt?
Can your phone fit in a matchbox?
Ya dig? :)