interesting idea a doodle-roulette? a blank canvas that randomly pairs two bored people and gives them crayons to jam :) or like a global townsquare but for g

interesting idea a doodle-roulette? a blank canvas that randomly pairs two bored people and gives them crayons to jam :) or like a global townsquare but for graffiti -- all are welcome at once on an infinite ever changing canvas