@xor i invented a thing many years ago at shmoocon i called "mspaint as a service", where I was able to bypass the kiosk mode of a large touchscreen display that sat between elevators getting to the desktop, then i'd open mspaint and fullscreen it, and let all the folks at lobbycon who'd been drinking "basically fingerpaint".

it was pretty rad. started a thing. did mspaint as a service for years after that.

you should do the same at the train station! \o/