The BR41N.IO Hackathon brings together engineers, programmers, physicians, designers, artists or fashionistas, to collaborate intensively as an interdisciplinary team. They plan and produce their own fully functional EEG-based Brain-Computer Interface headpiece to control a drone, a Sphero or e-puck robot or an orthosis with motor imagery. Whenever they think of a right arm movement, their device performs a defined action. The artists among the hackers make artful paintings or post and tweet a status update. And hackers who are enthusiasts in tailoring or 3D printing give their BCI headpiece an artful and unique design. And finally, kids create their very own ideas of an interactive head accessory that is inspired by animals, mythical creatures or their fantasy.