Odroid Go

[pmprog]

Hmmm, looks like you'll be able to use it as a bluetooth controller
https://github.com/OtherCrashOverride/bt-keyboard-go

Two different C64 cores:
https://github.com/OtherCrashOverride/frodo-go
https://github.com/Schuemi/c64-go

I've briefly tried Scheumi's build, and it seemed to work quite well

 

[pmprog]

https://forum.odroid.com/viewtopic.php?f=158&t=33936

There's an unofficial upgrade board being developed which sounds pretty interesting