You got me thinking that maybe I should add something to my disaster kit. There are dongles available for $25 that let you receive broadcast television on an Android phone. So that, along with a backup battery, would allow for receiving TV during an extended power and network outage.
Also, now that pretty much all new cars have sizeable built-in screens, it seems like it would be trivially easy for car manufacturers to add a feature to receive broadcast television. (Only when parked, one would hope.)