I guess even a disposable vape has more computing power than the Lunar lander. (I don't know if that's more or less ridiculous than a key fob, but at least a key is not so disposable.)
A keyfob is more analogous though - i.e. a computing device used to control a vehicle.
Car chargers for usbs, or digital thermometers, or disposable pregnancy tests - it's absurd the amount of compute that ends up even in single use or trivial products.