Quick, Draw!
quickdraw.withgoogle.comVerkkoQuick, Draw! Can a neural network learn to recognize doodling? Help teach it by adding your drawings to the world’s largest doodling data set, shared publicly to help with machine learning research. Let's Draw!
AutoDraw
https://www.autodraw.comVerkkoFast drawing for everyone. AutoDraw pairs machine learning with drawings from talented artists to help you draw stuff fast.