Dive into a world of creativity!
Think about it.
A brain in a jar would be desperately wanting some of that sweet sweet dopamine. Anyone would be craving stimulation if they had been babysitting cryopods for hundreds of years with no way to self-deactivate.
We also know from watching Brain-On-A-Roomba that he's distractible and not very able to interact with the world.
Ergo,
baby sensory video
The series reminded me why I fell in love with Fallout all those years ago