I’ve had an Odroid running for many years, just as a Linux server to play with and automate some stuff on my home LAN. I was looking to upgrade to something with more RAM and found that the SBCs with more RAM get expensive pretty quick. Plus, there is the limitation of depending on a custom Linux build from the manufacturer that runs on the device. So I ended up buying a mini PC for not much more than an SBC with lots of RAM. There’s this one, as an example for $150
https://www.amazon.com/dp/B0BYD8SFBW
I ended going higher in price with this one https://www.amazon.com/Beelink-U59-Processor-Desktop-Computers/dp/B0B74GGMBG/
But for just playing with Linux, these are much more useful because you can run any normal Linux distro.
I was thinking of various movies that constantly run on TV, but your comment made me realize that Cars or Polar Express is probably the correct answer. My son was obsessed with those movies when he was young and we had them on constant rotation.