THE FACE CONTROL KIT - a physical and digital kit for building face controlled objects and projects.
Eyebrow Pong - try @ https://eyebrowpong.com/
Wifi enabled eyebrow controlled pinball using MQTT via shiftr.io - implementing the internet of things
Eyebrow controlled fruit slicer - example project from TFCK
MODIFY SOUND - collection of experimental musical instruments made using basic Arduino parts