a few years ago, my mom purchased a tiny tv radio, no screen, ran on a button cell battery, picked up AM, FM, and TV (audio only), it was $2 at the flea market and worked pretty well though it was a bit useless. It was about the size of a ipod shuffle
radio receivers are not expensive and they can be made very small.
also why can't over the air tv stations just broadcast their channelling real time over a live stream online?