bjesus/eyeroll
github.com/bjesus/eyerollEyeroll is a WebExtension for Firefox that let's you scroll webpages by blinking your eyes. Close your right eye to scroll down, and your left eye to scroll up. It's great for scrolling chords without leaving your instrument, or reading the news while you're brushing your teeth! Eyeroll works 100% on your device and works on Firefox for Android too.