Is a momentary-contact optical switch with auditory feedback that works by detecting a beam of reflected pulsed infrared light. Can be controlled with an eye blink, eyebrow movement, finger movement, head movement, and facial muscle movement.
50 Simple Switch or Low Tech Activities resource for the classroom. Many of which are helpful for giving more options to students who have difficulty saying what they want. This list has inter-changeable resources that are unique for each student.
Swifty USB switch interface ($79.95) - As the name implies, an adaptive switch can be used to not only access a computer it can be used to wake it from sleep (USB Host must support Remote Wakeup). Even if you're not using Swifty for access you can use it to wakeup your computer. An Orby switch is also pictured.