Some drawings made by a repurposed lab robot (an old Ettan Spot Picker to be disposed of), using a mechanical pencil. It became a universal robot arm (and thus an able draughtsman) after some reverse engineering of the communication protocol.
Having freshly drawn XKCD comics instead of having to view them on a screen is of course luxurious. Never shall there be a shortage of mazes to fill out either. With the recursive division algorithm the robot can draw an infinite number of different mazes.
Many thanks to the Proteomics group for offering their old machine for some experimenting.