You can run it on a small partition via dual-boot or entirely from a USB drive.
Assuming you have found an "Android TV 13 GSI .img" file, here is how to turn it into a bootable firmware.
| If you want... | Don't search for "ISO". Search for... | | :--- | :--- | | App development | "Android TV 13 Emulator Setup" | | Flash to a real TV box | "Android TV 13 GSI Treble" | | Run on Raspberry Pi | "Android TV 13 for Raspberry Pi 4" | | Run on PC | "Android x86 TV build" or "Bliss OS 15" |