Monitoring of brainwaves is not a new idea, but the technology is now moving from a clinical and research environment to a consumer hobby. Medicalautomation.org reported that OpenBCI has developed a low-cost, programmable, open-source EEG [electroencephalography] platform that can enable anyone with a computer to have access to their brainwaves (see 3-D Printed Device Allows Users Access to Brainwaves). The possibilities are endless, ranging from neural self-therapy to improve your productivity or attention, to interacting with video games using your motor cortex, to controlling the lights and music in your home based on your mood. To get access to your brainwaves, you need a headset with sensors to pick up the waves from various points around your head. Where do you get such a headset? No problem — just print one! 3D printing may be be retrospectively considered to be like the industrial revolution, which took place from the 18th to 19th centuries. It will change just about everything. If you can imagine an object and design it with 3D software, you can print it. Next week, I will be attending the Inside 3D Printing Conference and Expo in New York. I expect to see many things that I had not previously imagined.