Your TV remote already has an ad blocker
Many years ago, my dad discovered a manual ad-blocking technique for TVs: when commercials start playing, mute the device. It's surprisingly effective. The otherwise captivating ads immediately become uninteresting.
To my surprise, my dad wasn't the first to come up with the idea. In The Attention Merchants, Tim Wu explains that the Zenith Flash-Matic, the first wireless remote control, was partly designed to “shoot out” the sounds of commercials. Clever!