Disney put a TCP/IP stack in a light bulb three years ago, so you can expect toys and other merchandise to be data-enabled, using light.
Don't many of those so called 'smart lightbulbs' have a TCP/IP stack and more in them already?
But these devices will come and will naturally be very hackable so that the camera and microphone will remain on even if the bulb is turned off allowning every man and their dog to snoop on you.
Having sex with the lights off won't be a private thing for much longer.
Sigh. Just another bit of TAT to go on my list of things to never ever buy.