Take a Game Boy, get it online with a Raspberry Pi and get mining.
Using a Raspberry Pi and game streaming you can Doom Eternal on just about anything.
This Game Boy is actually running a Raspberry Pi with Fortnite streamed from a PC.
All you need to get your old Game Boy on steroids and able to play emulated games from most eras, is a Raspberry Pi Zero and some spare time (and a lot of solder).
The latest Kids React video has kids looking at the 25-year-old Nintendo Game Boy.