Robert Schneider of excellent psych-rock group Apples In Stereo hacked a Mattel MindFlex game, which measures brain waves, into a controller for his Moog analog synthesizer. He calls his mind-control interface The Teletron. If you'd like to make your own, here are Schneider's video instructions, "Teletron for the Populace."
David Pescovitz is Boing Boing's co-editor/managing partner. He's also a research director at Institute for the Future. On Instagram, he's @pesco.