Central to the production were the Magnetic Poets themselves, a pair of 7-foot tall characters named "IO" and "Projektor." Built into their respective costumes were all manner of audio and visual electronic wizardry. IO had a variety of electronic musical instruments and speakers integrated into his outfit and Projektor was rigged with a variety of display screens, lasers, and video projectors.
While the bulk of the costumes and integrated electronics had already been sourced, they were having trouble finding anyone who could make a pair of helmets to their specifications. That's where I came in.
Before I get into the details of the fabrication, here's a video showing finished pieces in action:
Here's a close-up shot of the Projektor helmet:

If you want to see how the helmets were made, read on...