Android TV just to sandbox Amazon

Amazon Prime will be the only subscription streaming service left at my home after this months subscriptions expire. My old Vizio TV has a Onn 4k TV box. You know the regular hacks, new launcher, Kodie, NewPipe, external hard drive, F-Droid etc.

Do you have any suggestions setting up a dedicated android TV box?

Getting a new device is considerable as soon as a working plan is nailed down.