It has absolutely happened with those things.

Cars: https://www.youtube.com/watch?v=sceLsLkQf7A

Fridges: https://fortune.com/2025/09/19/samsung-family-hub-refrigerat...

I'm not aware of a smart watch doing first-party ads yet.

Electricity I don't know how you could deliver ads through, but if someone could think of a way I bet they would. If everyone knew Morris code I bet they would make the lights flicker in Morris code for a discount.

Modern cars with connected infotainment systems are always trying to upsell you

Washing machines I dont know of anything at the moment, but I wouldnt count it out.

Smartphones/watches? Aren't those just ad delivery mechanisms? Not to mention tracking? Its a core foundation of modern ad technology

Headphones are not thank god, I hope it stays that way

Modern cars gather a truly shocking amount of data about their "users", which is then sold to all and sundry, including those wishing to sell you products.

My LG dryer was using wifi to advertise an extended warranty for itself.

Then it broke, maybe I should have bought the warranty?

I bought a simpler model without wifi this time.