Brightest idea ever: A.I. light bulbs

The smartphone we all carry every day is arguably the most important invention of all time.
It has enabled 2 billion people to gain instant access to artificial intelligence, as well as hundreds of Libraries of Congress worth of information. The processing power of the smartphone dwarfs 1990s-era supercomputers and has turned instant communication through voice, text, photos and video into an everyday banality.
What's the next invention that will change the world like the smartphone has?
I beli