A.I. Experiments by Google - Explore machine learning by playing w/ pics, music, and more
Icons-For-Free.com - Free icons sets, all sizes and popular formats, free licenses. Freebies icons sets
Swift Playgrounds - Learn serious code on your iPad in a seriously fun way
Photo Lab AI Artist - Hand-drawn-quality portraits from selfies drawn by AI Artist
Talk to Books by Google - Browse passages from books using experimental AI
Flaticon - A database of free vector icons.