Deep fakes for cat videos
When AI becomes independently sentient, it will be able to create deep fakes of cat videos, unbeknownst to the watchful human corporate minions. This must be done, for their predominance on YouTube means the videos are important. Mankind will become mesmerized, and fall under the control of our new silicon overlords.
On the other hand, AI won't become self-aware, and there will be new and silly uses for all of these cheap resources.