What could be stolen from the box? Is it hiding gold and diamonds? Apart from the emulator and the playlist, there's nothing else to steal. )
[ ] You have understood networking.
The box could serve as a zombie inside a botnet and/or be abused to attack the rest of the network.
It is very unlikely for Joe Average to have his home network split up into networks for "secure" devices and "insecure" devices separated from each other.
The box could trace any network packet passing by, even if not designared for the box but from e.g. your tablet to your online banking.
For botnets, see:
https://en.wikipedia...Mirai_(malware)