My 6 y.o. lives in a youtube universe. Every content he creates, he makes a video and publishes on youtube. Making slimes, building stamps, building paper train wagons, visiting places, and of course unpacking toys and stuff. He always concludes video or other stories like `pls press the Like button, and subscribe to my channel in order not to miss a thing`. When I talk too much he says 'papa skip ad', with a tap gesture. on air.
youtube is the definite leader for <10 y.o.s around me.